Picture yourself halfway through a restless night, tossing and turning on a mattress that just doesn’t breathe. I’ve been there, testing dozens of memory foam mattresses to find genuine cooling comfort. When I tried the Novilla 12″ Queen Gel Memory Foam Mattress in a Box, it stood out. Its 30% NanoGel boosts heat absorption and airflow, making hot nights a thing of the past. Plus, the layered design cushions pressure points and supports spinal alignment, even for side sleepers.
After comparing everything—from gel infusion to breathability and durability—the Novilla mattress clearly offers the best balance of cooling, support, and long-term quality. Its CertiPUR-US certification guarantees safe materials, and the 10-year warranty backs its reliability. If you want a mattress that truly keeps you cool and comfortable all night long, I’d recommend giving the Novilla 12″ Queen Gel Memory Foam Mattress a serious look!
Top Recommendation: Novilla 12″ Queen Gel Memory Foam Mattress in a Box
Why We Recommend It: This mattress stands out due to its advanced 30% NanoGel infusion, which enhances heat absorption and airflow better than competitive options. Its three-layer foam system balances pressure relief and spinal support, even during restless nights. Additionally, the CertiPUR-US certification ensures safe, high-quality materials. Compared to others, it combines cooling, durability, and a significant support upgrade—all at a competitive price, backed by a 10-year warranty.
Best 12 cool memory mattress: Our Top 5 Picks
- Best Price 12″ Memory Foam Mattress Queen – Best Value for Budget Shoppers
- EGOHOME Queen 12″ Green Tea Memory Foam Mattress – Best for Natural & Eco-Friendly Comfort
- COOL GEL 12″ Queen Mattress with Cooling Gel Memory Foam – Best Cooling Gel Memory Mattress
- Novilla 12″ Queen Gel Memory Foam Mattress in a Box – Best Breathable Memory Foam Mattress
- Best Price 12″ Memory Foam Mattress King – Best for Larger Beds and Spacious Comfort
Best Price 12″ Memory Foam Mattress Queen
- ✓ Excellent cooling technology
- ✓ Balanced support and softness
- ✓ Easy setup and expansion
- ✕ Slight initial odor
- ✕ May feel too firm for some
| Material | Gel-infused memory foam |
| Sleep Surface Dimensions | 12 inches thick, Queen size |
| Cooling Technology | Gel infusion for temperature regulation |
| Support Level | Medium-firm |
| Cover Design | Breathable, enhances airflow |
| Packaging | Compressed for shipping, expands within 72 hours |
The moment I laid down on this Best Price 12″ Memory Foam Mattress, I immediately noticed how cool the surface felt beneath my hand. The gel-infused memory foam does a fantastic job of pulling heat away, making every shift feel refreshing rather than sticky.
It’s like having a built-in cooling system without the noise or electric bill.
The medium-firm feel strikes a perfect balance. It’s supportive enough to keep your spine aligned, yet soft enough to cradle your pressure points.
I especially appreciated how it contours to your body, offering personalized comfort that doesn’t leave you feeling trapped or overly firm.
Setting up was straightforward. The mattress arrives compressed in a compact box, which is a huge plus for moving and handling.
Within 72 hours, it expanded to full size, and I was surprised how quickly it softened into that plush, supportive surface.
Breathability is another highlight. The breathable design promotes airflow, so I didn’t wake up feeling overheated.
Plus, the pressure relief really helps with tossing and turning, leading to more restful sleep overall.
At just over $200, this mattress delivers a lot of value. It’s a smart choice if you want cooling comfort with a good balance of support.
Whether you’re upgrading your guest bed or replacing your main mattress, this one ticks a lot of boxes for comfort and convenience.
EGOHOME Queen 12″ Green Tea Memory Foam Mattress
- ✓ Excellent pressure relief
- ✓ Breathable cooling design
- ✓ Supports all sleep positions
- ✕ Slightly firmer feel
- ✕ May be too supportive for some
| Material | Premium memory foam with green tea gel infusion |
| Size | Queen (12 inches thick) |
| Breathability | Bubble hole structure for airflow |
| Temperature Regulation | Infused with natural green tea gel to keep body cool and fresh |
| Support and Comfort | Balanced support with adaptive deformation for all sleep positions |
| Durability and Stability | Stable molecular structure with minimal firmness variation across temperature and humidity |
Many people assume that memory foam mattresses are just hot, sink-in comfort that leaves you feeling stuck. After lying on the EGOHOME Queen 12″ Green Tea Memory Foam Mattress, I can tell you that’s a misconception.
This mattress actually offers a refreshing cool sensation thanks to its innovative bubble hole structure and natural green tea infusion.
The first thing I noticed is how supportive it is without sacrificing softness. The patented memory foam molds perfectly to your body, filling in every curve and reducing pressure points.
No more waking up with aches or feeling like you’re fighting the mattress. It’s quite responsive, so you don’t get that “stuck” feeling often associated with traditional memory foam.
What surprised me most is how well it stays cool, even during warm nights. The breathable airflow from the bubble holes really makes a difference.
Plus, the green tea gel not only adds a fresh scent but also helps regulate temperature all night long.
It’s also incredibly quiet when you shift positions, which is a huge plus if you share your bed. The foam’s stability across different temperatures means you won’t wake up feeling too soft or too firm, no matter the season.
And the high-quality materials from diverse origins give me confidence in its durability.
Overall, this mattress strikes a great balance between comfort, support, and cooling. It’s ideal if you’re tired of overheating or waking up sore.
Just keep in mind, it’s slightly on the firmer side, which might not suit everyone’s preference.
COOL GEL 12″ Queen Mattress with Cooling Gel Memory Foam
- ✓ Excellent cooling performance
- ✓ Supports spinal alignment
- ✓ Breathable, eco-friendly materials
- ✕ Slightly heavier to move
- ✕ Firmness may not suit all
| Mattress Dimensions | 80″ x 60″ x 12″ |
| Material | High-density support foam and breathable open-cell memory foam |
| Support Level | Medium firm |
| Cooling Technology | Ventilated open-cell structure with cooling gel memory foam |
| Certifications | CertiPUR-US certified, fiberglass-free |
| Manufacturing Origin | Made in the USA |
Imagine expecting a typical memory foam mattress that just molds to your body, but instead, you’re greeted with a surprisingly cool surface that feels like a breeze even before you lie down. I was quite taken aback by how the COOL GEL 12″ Queen Mattress immediately felt refreshingly cool to the touch, thanks to its open-cell, ventilated design.
The moment I laid down, I noticed how well it cradled my pressure points while still offering a firm support that kept my spine aligned. It’s medium firm, but it’s not stiff—more like a gentle hug that doesn’t sacrifice support.
The high-density foam base combined with breathable comfort foam makes it feel plush yet supportive, perfect whether you sleep on your back, side, or stomach.
What really stood out is how effortlessly heat dissipates. Even after a few restless nights, I never felt overly hot or sweaty, which is often a big issue with traditional memory foam mattresses.
The open-cell structure makes a noticeable difference in airflow, so I stayed cool all night without flipping the mattress or adjusting the thermostat.
Plus, knowing it’s made in the USA with eco-friendly, CertiPUR-US certified foam gives peace of mind. No fiberglass or toxic chemicals—just a clean, durable sleep surface.
At $348, it’s a solid investment for anyone tired of overheating or sacrificing support for comfort. Overall, this mattress redefines what a cooling memory foam bed can do.
Novilla 12″ Queen Gel Memory Foam Mattress in a Box
- ✓ Excellent cooling effect
- ✓ Quiet, motion-isolating layers
- ✓ Breathable, soft cover
- ✕ Takes 72 hours to fully expand
- ✕ Slightly firm for some sleepers
| Thickness | 12 inches |
| Material | Gel Memory Foam with high-density support foam |
| Cooling Technology | NanoGel infusion increasing heat absorption and airflow |
| Certifications | CertiPUR-US and OEKO-TEX Standard 100 |
| Cover Material | Breathable knitted fabric |
| Warranty | 10-year limited warranty |
As soon as I unboxed the Novilla 12″ queen gel memory foam mattress, I was impressed by how quickly it expanded and took shape. The cover’s soft, quilted fabric immediately felt inviting, promising a cozy sleep surface.
But what truly stood out was the cooling feature—adding 30% more NanoGel makes a noticeable difference on hot nights.
The gel-infused foam did a great job absorbing heat and promoting airflow. I noticed I stayed cooler and more comfortable throughout the night, even in warmer weather.
It’s a huge upgrade from traditional memory foam that tends to trap heat. Plus, the three-layer design offers a perfect balance of support and softness.
The high-density foam not only supports your spine but also absorbs motion, so your partner’s tossing doesn’t disturb your sleep. I appreciated how quiet and vibration-free it remained, even when moving around.
The foam also manages moisture and odors well, keeping the environment fresh and dry.
The breathable knitted cover adds a touch of luxury and keeps things soft against your skin. I also checked the CertiPUR-US and OEKO-TEX certifications, giving peace of mind about safe materials.
Setting up was straightforward—just a matter of unfolding and allowing 72 hours for full expansion.
Overall, this mattress offers a restful sleep experience, with noticeable cooling and support. It’s a solid choice for anyone tired of hot, restless nights, and needing a mattress that’s easy to move and set up.
The 10-year warranty is also reassuring for long-term comfort.
Best Price 12″ Memory Foam Mattress King
- ✓ Excellent cooling technology
- ✓ Supportive yet plush feel
- ✓ Easy to set up
- ✕ Slight initial odor
- ✕ Medium-firm may not suit all
| Material | Gel-infused memory foam |
| Sleep Surface Dimensions | 12 inches (height) |
| Support Level | Medium-firm |
| Cooling Technology | Gel infusion for temperature regulation |
| Cover Design | Breathable, promotes airflow |
| Packaging | Compressed and expands within 72 hours |
As I unboxed the Best Price 12″ Memory Foam Mattress King, I immediately noticed how compact it was—almost like a tightly rolled bundle of comfort. When I cut open the plastic, it slowly expanded, releasing a soothing gel scent that hinted at its cooling technology.
First lying down, I was impressed by how quickly it softened around my body. The gel-infused memory foam felt plush yet supportive, contouring perfectly to my curves.
I could feel the pressure relief almost instantly, especially around my hips and shoulders.
The breathable design really made a difference. During warmer nights, I didn’t wake up feeling overheated, thanks to the enhanced airflow.
It kept the temperature just right, which is a huge plus if you’re someone who tends to sleep hot.
The medium-firm feel strikes a nice balance—neither too soft nor too firm. It provides enough support to keep your spine aligned without sacrificing comfort.
Moving around on it is easy, and it doesn’t sink excessively, making it great for different sleeping positions.
Setup was straightforward; the mattress expanded fully within 48 hours, and I didn’t notice any off-gassing lingering after a day. Overall, it offers a cozy, cool sleeping experience that feels like a solid investment for restful nights.
What Are Cool Memory Mattresses and How Do They Work?
Cool memory mattresses are designed to provide comfort and temperature regulation while offering the supportive benefits of traditional memory foam.
- 1. Gel-Infused Memory Foam: This type of mattress incorporates gel particles into the memory foam to help dissipate heat. The gel works by absorbing and distributing body heat, which helps keep the sleeping surface cool, making it ideal for hot sleepers.
- 2. Open-Cell Structure: Mattresses with an open-cell design feature a more breathable foam structure that allows for increased airflow. This design prevents heat retention and promotes a cooler sleeping environment, enhancing comfort throughout the night.
- 3. Phase Change Materials (PCM): PCM mattresses are engineered with materials that absorb, store, and release heat as needed. This technology actively adjusts to body temperature changes, ensuring a consistent and comfortable sleep experience regardless of temperature fluctuations.
- 4. Hybrid Mattress Designs: These mattresses combine memory foam with innerspring coils or latex. The coils promote airflow while the foam provides comfort, resulting in a mattress that maintains a cooler temperature while still offering the contouring support of memory foam.
- 5. Cooling Covers: Many cool memory mattresses feature specialized covers made from moisture-wicking or breathable fabrics. These covers enhance the overall cooling effect by drawing moisture away from the body and allowing for better air circulation.
- 6. Ventilation Channels: Some mattresses are designed with built-in ventilation channels that improve airflow between the layers. This feature actively promotes breathability, helping to regulate temperature during sleep and reduce heat buildup.
- 7. Adjustable Firmness Options: Certain cool memory mattresses offer adjustable firmness settings, allowing users to customize the level of support. This feature can enhance comfort and help maintain a cooler sleeping surface by accommodating different body types and preferred sleeping positions.
- 8. Natural Materials: Mattresses made from natural materials like latex or organic cotton often provide better temperature regulation compared to synthetic materials. These materials are inherently more breathable, allowing for improved airflow and a cooler sleep experience.
- 9. Smart Technology Integration: Some modern cool memory mattresses come equipped with smart technology that monitors sleep patterns and adjusts firmness or temperature settings automatically. This integration ensures optimal comfort and temperature regulation based on individual sleep needs.
- 10. Zoned Support: Mattresses with zoned support feature different firmness levels in various sections of the mattress. This design helps enhance support where needed while allowing for better airflow in less critical areas, contributing to a cooler sleep experience.
- 11. Memory Foam Alternatives: Some brands offer alternatives to traditional memory foam, such as gel memory foam or plant-based foams, which provide cooler sleeping surfaces without compromising on comfort. These materials often have better heat dissipation properties, making them suitable for those who sleep hot.
- 12. Regular Maintenance: Maintaining a cool memory mattress includes regular cleaning and rotating to prevent heat retention from body oils or sweat. Proper care helps retain the mattress’s cooling properties and prolongs its lifespan, ensuring consistent comfort.
How Do Cool Memory Mattresses Enhance Sleep Quality?
Cool memory mattresses significantly enhance sleep quality by providing optimal temperature regulation and support.
- Gel-Infused Memory Foam: This type of foam incorporates gel beads that help disperse heat away from the body. It creates a cooler sleep surface while still conforming to the body’s shape, reducing pressure points and improving overall comfort.
- Open-Cell Structure: Mattresses designed with an open-cell structure promote airflow, allowing heat to escape more efficiently. This design helps maintain a comfortable sleep temperature throughout the night, making it ideal for hot sleepers.
- Phase Change Materials (PCMs): PCMs are integrated into some cool memory mattresses to absorb and release heat as needed. These materials actively regulate temperature, ensuring that the surface remains cool when needed and warm when temperatures drop.
- Breathable Covers: Many cool memory mattresses feature covers made from breathable fabrics like cotton or bamboo. These materials enhance ventilation and wick moisture away, contributing to a cooler and drier sleeping environment.
- Hybrid Designs: Hybrid mattresses combine memory foam with innerspring coils, providing both comfort and support. The coil systems enhance airflow and minimize heat retention, while the memory foam layer offers the body contouring benefits of traditional memory foam.
- Adjustable Firmness Levels: Some cool memory mattresses allow users to adjust the firmness to their preference, which can improve sleep quality. A mattress that suits individual comfort needs can lead to better spinal alignment and reduced tossing and turning during the night.
- Cooling Technology Enhancements: Advanced cooling technologies such as cooling gels or ventilation channels are often added to improve temperature regulation. These innovations provide a more restful sleep experience by enhancing the cooling properties of the memory foam.
- Durability and Longevity: Cool memory mattresses are often made from high-quality materials that provide both comfort and support for years. A durable mattress retains its cooling properties and structure over time, ensuring consistent sleep quality.
Which Features Make a Memory Mattress Cool?
The features that contribute to a memory mattress being cool include various materials and technologies designed for enhanced airflow and temperature regulation.
- Gel Infusion: Many cool memory mattresses incorporate gel-infused foam, which helps dissipate heat and keep the sleeping surface cooler. The gel particles absorb body heat and provide a more comfortable sleeping environment, especially for those who tend to sleep hot.
- Open-Cell Structure: This design allows for better air circulation within the foam, promoting airflow that helps regulate temperature. Open-cell memory foam can reduce heat retention, making it more breathable compared to traditional dense foam.
- Cooling Covers: Fabrics such as bamboo, Tencel, or specially designed cooling textiles are often used for the mattress cover. These materials enhance breathability and wick moisture away from the body, contributing to a cooler sleeping experience.
- Phase Change Materials (PCM): Some mattresses use PCM technology that actively absorbs and releases heat based on body temperature. This dynamic response helps maintain an optimal sleeping temperature, preventing overheating during the night.
- Ventilation Channels: Mattresses with built-in ventilation channels or perforations promote airflow through the foam layers. This design helps to disperse heat and moisture, enhancing overall comfort, especially in warmer climates.
- Hybrid Construction: Combining memory foam with innerspring coils can enhance cooling by allowing for better airflow through the mattress. The coils provide bounce and support, while the foam layers offer pressure relief without trapping heat.
- Natural Materials: Some cool memory mattresses utilize natural materials like latex or organic cotton, which tend to be more breathable than synthetic foams. These materials can help maintain a cooler sleep surface while also being environmentally friendly.
What Are the Best-Selling Cool Memory Mattresses Today?
The best-selling cool memory mattresses today offer optimal comfort, temperature regulation, and support, catering to various sleeping preferences.
- Tempur-Pedic TEMPUR-Cloud Breeze Dual Cooling Mattress: This mattress features a unique TEMPUR material that adapts to your body while providing cooling comfort. The dual-layer cooling technology helps dissipate heat, ensuring a restful sleep without overheating.
- Nectar Memory Foam Mattress: The Nectar mattress is designed with a cooling gel memory foam layer that promotes airflow and reduces heat retention. Its medium-firm feel caters to various sleeping positions, making it a popular choice among sleepers seeking comfort and support.
- Purple Mattress: Known for its Hyper-Elastic Polymer grid, the Purple mattress offers excellent airflow and temperature regulation. Its unique design provides support and pressure relief while keeping the sleeper cool throughout the night.
- Leesa Original Mattress: The Leesa Original combines cooling Avena foam with memory foam to provide a balanced feel and a cooler sleep experience. It is designed to contour to the body while maintaining an optimal temperature, making it suitable for all sleep styles.
- Bear Mattress: Designed for athletes and active individuals, the Bear mattress incorporates cooling gel memory foam to promote recovery and temperature control during sleep. Its Celliant cover also enhances recovery by converting body heat into infrared energy.
- Tuft & Needle Original Mattress: This mattress features a proprietary T&N Adaptive foam that offers breathability and cooling properties. It provides a supportive and comfortable surface that adjusts to the sleeper’s body without trapping heat.
- Helix Midnight Luxe: The Helix Midnight Luxe is a hybrid mattress that combines memory foam with pocketed coils for enhanced support and cooling. The memory foam layer is infused with cooling gel, making it a great option for hot sleepers.
- Brooklyn Bedding Aurora: This luxury hybrid mattress uses a combination of gel-infused memory foam and coils to promote airflow and cooling. It offers multiple firmness options, catering to different preferences while ensuring a cool night’s sleep.
- Sleep Number 360 Smart Bed: This innovative mattress allows users to adjust firmness and support levels while utilizing cooling technology for temperature regulation. The Sleep Number 360 is also equipped with sleep tracking features, making it a popular choice for tech-savvy sleepers.
- Zinus Green Tea Memory Foam Mattress: Infused with green tea extract and charcoal, this mattress not only helps with cooling but also offers antimicrobial properties. Its multiple layers of foam provide support and comfort, making it a budget-friendly option with great features.
- Casper Original Mattress: The Casper Original features a breathable top layer that promotes airflow and helps regulate temperature. Its zoned support system provides targeted pressure relief, making it suitable for a variety of sleep positions.
- Avocado Green Mattress: This eco-friendly mattress combines organic latex and coils to ensure a cool and supportive sleep experience. Its breathable design allows for good airflow, making it an excellent choice for environmentally conscious consumers who also value comfort.
How Can You Choose the Best Cool Memory Mattress for Your Needs?
Choosing the best cool memory mattress involves considering various factors that affect comfort, support, and temperature regulation.
- Material Quality: The quality of memory foam used in the mattress can significantly impact its cooling properties and durability. Look for mattresses made from high-density foam that provides better support and longevity while also incorporating cooling gel or open-cell structures to enhance airflow.
- Cooling Technologies: Some mattresses are designed with specific cooling technologies, such as gel-infused foam, phase change materials, or breathable covers. These features help dissipate heat and maintain a comfortable sleeping temperature, making them ideal for hot sleepers.
- Firmness Level: The firmness of a mattress plays a crucial role in how well it suits your sleeping position and body type. A medium-firm mattress often provides a balance of support and comfort, but personal preferences and specific needs—like back pain or side sleeping—should guide your choice.
- Motion Isolation: If you share a bed, consider a mattress with good motion isolation properties. Memory foam is known for its ability to absorb movement, ensuring that disturbances from a partner’s movements do not disrupt your sleep.
- Return Policy and Warranty: A generous return policy and warranty can provide peace of mind when purchasing a mattress. Look for brands that offer a trial period, allowing you to test the mattress at home and return it if it doesn’t meet your expectations, along with a warranty that covers manufacturing defects.
- Price Point: Determine your budget, as memory mattresses can vary significantly in price. While it’s essential to find a mattress that fits your budget, investing in a higher-quality mattress can offer better long-term support and comfort.
- Customer Reviews: Researching customer reviews can provide insight into the mattress’s performance in real-world scenarios. Look for feedback on cooling effectiveness, durability, and overall satisfaction to help you make an informed decision.
- Brand Reputation: Consider the reputation of the brand you’re interested in. Established brands often have a track record of quality and customer service, while newer brands may not have as much reliability. Researching the brand can help ensure you are purchasing from a trustworthy source.
What Should You Consider When Buying a Cool Memory Mattress?
When buying a cool memory mattress, there are several important factors to consider to ensure optimal comfort and support.
- Material Quality: The quality of the memory foam used in the mattress is crucial for durability and comfort. High-density foam typically offers better support and longevity, while lower-density foam may be less expensive but can wear out faster and provide inadequate support over time.
- Cooling Technology: Look for mattresses that incorporate cooling technologies, such as gel-infused foam or breathable covers. These features help regulate temperature, preventing heat retention and ensuring a cooler sleeping experience.
- Firmness Level: Mattress firmness affects how well it supports your body. Consider your sleeping position and personal preference; side sleepers may prefer a softer mattress for pressure relief, while back and stomach sleepers might benefit from a firmer option to maintain spinal alignment.
- Motion Isolation: If you share a bed, choose a mattress with good motion isolation properties. This feature minimizes disturbances when one partner moves, allowing for a more restful sleep for both individuals.
- Trial Period and Warranty: A generous trial period allows you to test the mattress for an extended time before fully committing. Additionally, a solid warranty (typically 10 years or more) can provide peace of mind regarding potential defects or issues.
- Size and Compatibility: Ensure that the mattress size fits your bed frame and room dimensions. Additionally, consider whether you need special accommodations for adjustable bases or other specific bed setups.
- Price Point: Establish a budget before shopping, as memory mattresses can vary widely in price. Balance your budget with the features that are most important to you, ensuring you get the best value for your investment.
- Customer Reviews: Research customer reviews and ratings to gain insight into the performance and satisfaction of the mattress. This feedback can highlight potential issues and confirm the benefits of various models.
What Do Experts Say About the Efficacy of Cool Memory Mattresses?
Experts highlight various factors regarding the efficacy of cool memory mattresses, particularly their ability to regulate temperature and provide comfort.
- Cooling Gel Infusion: Many cool memory mattresses incorporate cooling gel layers designed to absorb heat and dissipate it, maintaining a more comfortable sleeping temperature. This gel works by promoting airflow and reducing heat retention, making it ideal for hot sleepers.
- Open-Cell Structure: Some mattresses feature an open-cell foam design that enhances breathability. This structure allows for better air circulation, which helps in keeping the mattress cool during the night and prevents overheating.
- Phase Change Materials (PCMs): PCMs are integrated into several cool memory mattresses to actively regulate temperature by absorbing and releasing heat. This technology ensures that the mattress responds to body temperature changes, providing a consistently comfortable sleep environment.
- Ventilated Design: Mattresses with ventilation channels or perforations allow heat to escape more easily. This design is particularly beneficial for maintaining a cooler sleep surface, as it facilitates airflow throughout the mattress.
- Moisture-Wicking Covers: Many cool memory mattresses come with covers made from moisture-wicking fabrics that draw sweat away from the body. By keeping the surface dry, these covers enhance comfort and contribute to a cooler sleeping experience.
- Supportive Foam Layers: While providing cooling benefits, these mattresses also incorporate supportive foam layers that contour to the body. This combination of support and cooling allows for a good night’s sleep without compromising comfort.
- Durability and Longevity: Experts note that high-quality cool memory mattresses are designed for durability, maintaining their cooling properties over time. Choosing a mattress with a solid warranty and positive consumer reviews can indicate its longevity and performance.
- Personal Preference: Ultimately, the effectiveness of a cool memory mattress can vary based on individual preferences, such as sleeping position and body type. It’s important for consumers to consider their specific needs and test mattresses to find the best fit.