Free Delivery On Orders Over $180 
Same Day Delivery 
Click & Collect 
Installment Payment 
Store Locations 
eGift Card Buy Mattresses
A good mattress is the foundation of a restful night's sleep. Gain City offers a wide variety of mattresses online to suit your comfort preferences and support needs. Explore our selection and buy the perfect mattress in Singapore to help you wake up feeling refreshed and rejuvenated.
-
DUNLOPILLO MATTRESS DUN RITZ SUITE - SSDUN RITZ SUITE - SS
SUPER SINGLEAdd to Wish ListS$1,899.00 U.P. S$4,558.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN RITZ SUITE - QDUN RITZ SUITE - Q
QUEENProduct Description
The Dunlopillo Coolsilk 2.0 Ritz Suite Mattress offers a luxurious sleep experience with its premium Euro top and CoolSilk 2.0 fabric. Designed for comfort and support, it features natural Dunlopillo latex and a multi-zone pocketed spring system, ensuring a restful night's sleep for you and your family.
Key Features
- Premium Euro Top: Experience ultimate comfort with the premium Euro top design, providing a plush sleeping surface.
- CoolSilk 2.0 Fabric: Stay cool and comfortable with the imported CoolSilk 2.0 Nano-G fabric, designed for optimal temperature regulation.
- Natural Dunlopillo Latex: Enjoy the benefits of 100% natural Dunlopillo latex, offering superior support and durability.
- Multi-Zone Pocketed Spring: Benefit from the multi-zone "Barrel-Shape" individual pocketed spring system for targeted support and reduced motion transfer.
- Foam Encasement: Enhanced edge support with foam encasement for a firmer mattress border.
- 15-Year Warranty: Peace of mind with a comprehensive 15-year warranty.
Product Specifications
- Quilted Panel: Premium Euro Top
- Fabric: Imported CoolSilk 2.0 Nano-G Fabric, Non-Flip Single Sided
- Comfort Layer: 100% Natural Dunlopillo Latex
- Foam: High Resilient PU Foam
- Spring System: Multi Zones "Barrel-Shape" Individual Pocketed Spring
- Border Edge: Foam Encasement Firm Support
- Thickness: 30cm
- Warranty: 15 Years
- Size: Queen: 190cm x 152cm x 30cm, King: 190cm x 183cm x 30cm
Ideal For
This mattress is ideal for anyone seeking a blend of luxury and comfort. Perfect for you, your loved ones, your little ones, and your parents, it offers a restful sleep experience for all ages.
Add to Wish ListS$2,299.00 U.P. S$5,598.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN RITZ SUITE - KDUN RITZ SUITE - K
KINGProduct Description
The Dunlopillo Coolsilk 2.0 Ritz Suite Mattress offers a blend of luxurious comfort and advanced support. Featuring a premium Euro top quilted panel and imported CoolSilk 2.0 fabric, it ensures a cool and restful sleep. With 100% natural Dunlopillo latex and multi-zone pocketed springs, this mattress provides excellent body recovery and minimal disturbance, making it perfect for all family members.
Key Features
- Premium Euro Top Quilted Panel: Offers luxurious comfort and enhances mattress durability.
- Imported CoolSilk 2.0 Nano-G Fabric: Provides a cool sleeping surface with advanced thermo ability.
- 100% Natural Dunlopillo Latex: Ensures superior comfort and body recovery.
- Multi Zones "Barrel-Shape" Pocketed Spring: Minimizes disturbance and supports body alignment.
- Foam Encasement Firm Support: Reinforces edge support for a stable sleeping area.
- 15 Years Warranty: Guarantees long-term reliability and peace of mind.
Product Specifications
- Dimensions: King - 190cm x 183cm x 30cm, Queen - 190cm x 152cm x 30cm
- Quilted Panel: Premium Euro Top
- Fabric: Imported CoolSilk 2.0 Nano-G
- Comfort Layer: 100% Natural Dunlopillo Latex
- Spring System: Multi Zones "Barrel-Shape" Individual Pocketed Spring
- Edge Support: Foam Encasement Firm Support
- Thickness: 30cm
- Warranty: 15 Years
Ideal For
This mattress is ideal for you, your loved ones, your little ones, and your parents, providing comfort and support for all ages.
Add to Wish ListS$2,699.00 U.P. S$6,598.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN POLAR BREEZE - KDUN POLAR BREEZE - K
KINGProduct Description
The Dunlopillo Mattress Dun Polar Breeze offers a luxurious sleep experience with its advanced cooling technology and supportive comfort layers. Perfect for those seeking stress relief and a healthier sleep environment.
Key Features
- Premium Pillow Top: Experience ultimate comfort with a premium pillow top that enhances your sleep quality.
- Advanced Cooling Technology: Stay cool all night with CoolSilk 2.0 Nano-G Fabric and Triple Barrier Technology.
- Supportive Comfort Layer: Enjoy the perfect balance of support and comfort with Talasilver Latex and Cooling Gel Infused Foam.
- Enhanced Spring System: Benefit from 3-Zone Enhanced ActivEdge Individual Pocketed Spring for targeted support.
- Durable Foam Encasement: Provides firm support and edge stability for a longer-lasting mattress.
- Anti-Microbial Properties: Protects against bacteria, dust mites, and fungi for a healthier sleep environment.
Product Specifications
- Quilted Panel: Premium Pillow Top, Imported CoolSilk 2.0 Nano-G Fabric with Triple Barrier Technology
- Comfort Layer: Talasilver Latex Cooling Gel Infused Foam & High Resilient PU Foam
- Spring System: 3-Zone Enhanced ActivEdge Individual Pocketed Spring
- Border Edge: Foam Encasement Firm Support
- Thickness: 33cm
- Warranty: 15 Years
- Available Sizes: Single: 190cm x 91cm x 33cm, Super Single: 190cm x 107cm x 33cm, Queen: 190cm x 152cm x 33cm, King: 190cm x 183cm x 33cm
Ideal For
The Dunlopillo Mattress Dun Polar Breeze is ideal for anyone seeking a luxurious sleep experience. Perfect for families, couples, and individuals who value comfort and support.
Add to Wish ListS$2,719.00 U.P. S$8,497.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN POLAR BREEZE - QDUN POLAR BREEZE - Q
QUEENProduct Description
The Dunlopillo Mattress Dun Polar Breeze - Q is designed to provide unparalleled comfort and support. Featuring CoolSilk 2.0 Nano-G fabric and Talasilver Latex Cooling Gel, it ensures a cool and refreshing sleep. The 3-Zone Enhanced ActivEdge system offers targeted support, while the foam encasement provides firm edge support. Ideal for all ages, this mattress is your gateway to a restful night's sleep.
Key Features
- Premium Pillow Top: Enjoy luxurious comfort with a premium pillow top that enhances your sleeping experience.
- CoolSilk 2.0 Nano-G Fabric: Experience the cool touch of advanced fabric technology that keeps you comfortable all night.
- Talasilver Latex Cooling Gel: Infused with cooling gel for a refreshing sleep, this mattress adapts to your body's needs.
- 3-Zone Enhanced ActivEdge: Provides targeted support and minimizes motion transfer for undisturbed sleep.
- Foam Encasement Firm Support: Offers firm support along the edges, maximizing the sleeping surface.
- 15-Year Warranty: Enjoy peace of mind with a long-lasting warranty that ensures quality and durability.
Product Specifications
- Quilted Panel: Premium Pillow Top
- Fabric: Imported CoolSilk 2.0 Nano-G with Triple Barrier Technology
- Comfort Layer: Talasilver Latex Cooling Gel Infused Foam & High Resilient PU Foam
- Spring System: 3-Zone Enhanced ActivEdge Individual Pocketed Spring
- Border Edge: Foam Encasement Firm Support
- Thickness: 33cm
- Warranty: 15 Years
- Size Options: Single: 190cm x 91cm x 33cm, Super Single: 190cm x 107cm x 33cm, Queen: 190cm x 152cm x 33cm, King: 190cm x 183cm x 33cm
Ideal For
This mattress is ideal for you, your loved ones, your little ones, and your parents. It offers a perfect blend of comfort and support for all ages.
Add to Wish ListS$2,399.00 U.P. S$7,497.00 -
DUNLOPILLO MATTRESS DUN POLAR BREEZE - SSDUN POLAR BREEZE - SS
SUPER SINGLEAdd to Wish ListS$1,919.00 U.P. S$5,997.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN POLAR BREEZE - SDUN POLAR BREEZE - S
SINGLEAdd to Wish ListS$1,759.00 U.P. S$5,497.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN LAMBETH - KDUN LAMBETH - K
KINGProduct Description
The Dunlopillo Mattress Dun Lambeth - K offers a luxurious sleeping experience with its multi-pocketed spring system and advanced nanobionic fabric. Designed for comfort and durability, it features a plush pillow top and Talasilver wave latex, ensuring a restful and healthy sleep environment. Ideal for all family members, this mattress combines innovative technology with timeless comfort.
Key Features
- Multi-pocketed Spring System: Provides enhanced support and minimizes motion transfer for a restful sleep.
- Nanobionic Fabric: Promotes better recovery and wellness through advanced textile technology.
- Pillow Top Comfort: Offers a plush surface for added comfort and luxury.
- Talasilver Wave Latex: Ensures durability and antimicrobial properties for a healthier sleep environment.
- 15-Year Warranty: Guarantees long-term peace of mind and product reliability.
- Medium Soft Comfort: Perfect balance of softness and support for various sleeping positions.
Product Specifications
- Dimensions: 190cm x 183cm x 33cm
- Spring System: 3-Zone Individual Pocketed Spring
- Comfort Layer: Talasilver Wave Latex with High Resilient PU Foam
- Quilted Panel: Premium Pillow Top, Imported Nanobionic Fabric
- Border Edge: Foam Encasement
- Warranty: 15 Years
- Firmness: Medium Soft
- Function: Relieves Stress, Spinal Alignment, Anti Microbial, Thermo Ability, Minimum Disturbance, Textile Comfort, Eco Friendly, Body Recovery
Ideal For
This mattress is ideal for you, your loved ones, your little ones, and your parents, offering comfort and support for all ages.
Add to Wish ListS$3,099.00 U.P. S$6,798.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN LAMBETH - QDUN LAMBETH - Q
QUEENProduct Description
The Dunlopillo Royal Lambeth Mattress offers a blend of luxury and support with its premium pillow top, imported nanobionic fabric, and Talasilver wave latex. Perfect for all family members, it provides stress relief, spinal alignment, and eco-friendly features, ensuring a restful night's sleep.
Key Features
- Premium Pillow Top: Experience luxurious comfort with a premium pillow top that enhances your sleep quality.
- Imported Nanobionic Fabric: Features triple barrier technology for enhanced durability and comfort.
- Talasilver Wave Latex: Provides superior support and resilience with high resilient PU foam.
- 3-Zone Pocketed Spring System: Offers personalized support and minimizes motion transfer.
- Foam Encasement: Ensures medium soft comfort with reinforced edge support.
- 15-Year Warranty: Enjoy peace of mind with a long-lasting warranty.
Product Specifications
- Quilted Panel: Premium Pillow Top
- Quilted Panel: Imported Nanobionic Fabric with Triple Barrier Technology
- Comfort Layer: Talasilver Wave Latex with High Resilient PU Foam
- Spring System: 3-Zone Individual Pocketed Spring
- Border Edge: Foam Encasement Medium Soft Comfort
- Thickness: 33cm
- Warranty: 15 Years
- Size: Single: 190cm x 91cm x 33cm
- Size: Super Single: 190cm x 107cm x 33cm
- Size: Queen: 190cm x 152cm x 33cm
- Size: King: 190cm x 183cm x 33cm
Ideal For
This mattress is ideal for you, your loved ones, your little ones, and your parents. It offers stress relief, spinal alignment, and eco-friendly features, making it perfect for the whole family.
Add to Wish ListS$2,799.00 U.P. S$5,598.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN LAMBETH - SSDUN LAMBETH - SS
SUPER SINGLEAdd to Wish ListS$1,999.00 U.P. S$4,998.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN LAMBETH - SDUN LAMBETH - S
SINGLEAdd to Wish ListS$1,899.00 U.P. S$4,598.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN ROYAL BLEU - KDUN ROYAL BLEU - K
KINGProduct Description
The Dunlopillo Mattress Dun Royal Bleu offers a perfect blend of luxury and support. With its premium plush top and advanced fabric technology, it ensures a restful night's sleep. Ideal for all ages, it provides medium firm comfort and comes with a 15-year warranty.
Key Features
- Premium Plush Top: Enjoy the luxurious feel of a premium plush top for ultimate comfort.
- Advanced Fabric Technology: Features imported Nanobionic fabric with triple barrier technology for enhanced durability.
- Talasilver Latex Comfort: Experience superior comfort with Talasilver latex and high resilient PU foam.
- Individual Pocketed Spring System: Provides excellent support with honeycomb individual pocketed springs.
- Medium Firm Comfort: The foam encasement offers medium firm comfort, ideal for various sleeping positions.
- 15-Year Warranty: Enjoy peace of mind with a 15-year warranty.
Product Specifications
- Quilted Panel: Premium Plush Top
- Fabric: Imported Nanobionic Fabric with Triple Barrier Technology
- Comfort Layer: Talasilver Latex with High Resilient PU Foam
- Spring System: Honeycomb Individual Pocketed Spring
- Border Edge: Foam Encasement: Medium Firm Comfort
- Thickness: 33cm
- Warranty: 15 Years
- Sizes: Single: 190cm x 91cm x 30cm, Super Single: 190cm x 107cm x 30cm, Queen: 190cm x 152cm x 30cm, King: 190cm x 183cm x 30cm
Ideal For
The Dunlopillo Mattress Dun Royal Bleu is ideal for anyone seeking a luxurious sleep experience. Perfect for you, your loved ones, your little ones, and your parents, it offers comfort and support for all ages.
Add to Wish ListS$2,699.00 U.P. S$6,598.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN ROYAL BLEU - QDUN ROYAL BLEU - Q
QUEENProduct Description
The Dunlopillo Mattress Dun Royal Bleu - Q offers a luxurious sleep experience with its premium plush top and advanced comfort layers. Designed with a honeycomb pocketed spring system and medium firm comfort, it provides excellent support and minimizes motion transfer. Available in multiple sizes, it's perfect for anyone seeking a restful night's sleep.
Key Features
- Premium Plush Top: Experience the ultimate comfort with a quilted panel made from imported nanobionic fabric featuring triple barrier technology.
- Advanced Comfort Layer: Enjoy the perfect blend of Talasilver latex and high resilient PU foam for superior support.
- Honeycomb Pocketed Spring System: Individually pocketed springs provide personalized support and minimize motion transfer.
- Medium Firm Comfort: The foam encasement ensures a balanced medium firm feel, ideal for various sleeping positions.
- Durable Construction: Built to last with a 15-year warranty, offering peace of mind and long-term reliability.
- Multiple Size Options: Available in Single, Super Single, Queen, and King sizes to fit your specific needs.
Product Specifications
- Quilted Panel: Premium Plush Top
- Quilted Panel: Imported Nanobionic Fabric with Triple Barrier Technology
- Comfort Layer: Talasilver Latex with High Resilient PU Foam
- Spring System: Honeycomb Individual Pocketed Spring
- Border Edge: Foam Encasement: Medium Firm Comfort
- Thickness: 33cm
- Warranty: 15 Years
- Size: Single: 190cm x 91cm x 30cm, Super Single: 190cm x 107cm x 30cm, Queen: 190cm x 152cm x 30cm, King: 190cm x 183cm x 30cm
Ideal For
The Dunlopillo Mattress Dun Royal Bleu - Q is ideal for anyone seeking a luxurious sleep experience. Perfect for you, your loved ones, your little ones, and your parents, ensuring comfort and support for all.
Add to Wish ListS$2,299.00 U.P. S$5,598.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN ROYAL BLEU - SSDUN ROYAL BLEU - SS
SUPER SINGLEAdd to Wish ListS$1,899.00 U.P. S$3,798.00 9% OFF GST ABSORBED -
DUNLOPILLO MATTRESS DUN ROYAL BLEU - SDUN ROYAL BLEU - S
SINGLEAdd to Wish ListS$1,799.00 U.P. S$3,598.00 9% OFF GST ABSORBED -
KINGKOIL MATTRESS REGENCY- KREGENCY- K
KINGProduct Description
The Kingkoil Mattress Regency-K offers a luxurious sleeping experience with its supreme 5 Zone Pocketed Spring system and plush pillow-top. Wrapped in elegant Damask fabric and made with 100% natural latex, this mattress ensures comfort and durability, backed by a 15-year limited warranty.
Key Features
- Supreme Comfort: Experience unparalleled comfort with the 5 Zone Pocketed Spring system that adapts to your body shape.
- Luxurious Fabric: Wrapped in premium Damask fabric for a soft, elegant touch.
- Plush Pillow-Top: Enjoy a plush pillow-top layer that adds an extra level of comfort and luxury.
- Durable Construction: Built to last with high-quality materials and a 15-year limited warranty.
- Natural Materials: Made with 100% natural latex for a healthier sleep environment.
- Generous Dimensions: Spacious design with dimensions of 183.0 x 33.0 x 190.0 cm, perfect for any bedroom.
Product Specifications
- Dimensions: 183.0 x 33.0 x 190.0 cm
- Supreme 5 Zone Pocketed Spring
- Damask Fabric
- Plush Pillow-Top
- 15 Year Limited Warranty
- 100% Natural Latex
Ideal For
The Kingkoil Mattress Regency-K is ideal for those seeking luxurious comfort and support. Perfect for individuals or couples who value a restful night's sleep with supreme pocketed spring technology and plush pillow-top design.
Add to Wish ListS$6,788.00 U.P. S$13,576.00 9% OFF GST ABSORBED -
KINGKOIL MATTRESS REGENCY- QREGENCY- Q
QUEENProduct Description
The KingKoil Mattress Regency- Q offers a blend of luxury and support with its plush pillow-top and 5-zone pocketed spring system. Wrapped in durable damask fabric and made with 100% natural latex, it ensures a comfortable and healthy sleep environment. Ideal for those who value quality and longevity, it comes with a 15-year limited warranty.
Key Features
- Supreme Comfort: Experience the luxury of a plush pillow-top design that offers unparalleled comfort.
- Advanced Support: Features a 5-zone pocketed spring system for tailored support and reduced motion transfer.
- Durable Fabric: Wrapped in high-quality damask fabric for a soft and durable finish.
- Natural Materials: Made with 100% natural latex for a healthier sleep environment.
- Long-lasting Warranty: Comes with a 15-year limited warranty, ensuring peace of mind.
Product Specifications
- Size: Queen
- Dimensions: 152.0 x 33.0 x 190.0 cm
- Material: 100% Natural Latex
- Spring System: Supreme 5 Zone Pocketed Spring
- Fabric: Damask
- Warranty: 15 Year Limited
Ideal For
This mattress is ideal for those seeking luxurious comfort and support. Perfect for individuals or couples who appreciate high-quality bedding with advanced features.
Add to Wish ListS$5,488.00 U.P. S$10,976.00 9% OFF GST ABSORBED -
KINGKOIL MATTRESS REGENCY- SSREGENCY- SS
SUPER SINGLEAdd to Wish ListS$4,488.00 U.P. S$8,976.00 9% OFF GST ABSORBED -
KINGKOIL MATTRESS REGENCY- SREGENCY- S
SINGLEAdd to Wish ListS$3,788.00 U.P. S$7,576.00 9% OFF GST ABSORBED -
KINGKOIL MATTRESS SANCTUARY- KSANCTUARY- K
KINGProduct Description
The KingKoil Mattress Sanctuary-K offers unparalleled comfort and support with its plush pillow-top and 5-zone pocketed spring system. Made with 100% natural latex and covered in durable damask fabric, it's designed for those who value quality and luxury in their sleep experience.
Key Features
- Supreme Comfort: Enjoy the plush pillow-top design that provides a luxurious sleeping experience.
- Natural Materials: Made with 100% natural latex for a healthier sleep environment.
- Advanced Support: Features a 5-zone pocketed spring system for optimal support and pressure relief.
- Durable Fabric: Covered in high-quality damask fabric for added durability and style.
- Long-lasting Warranty: Comes with a 15-year limited warranty for peace of mind.
Product Specifications
- Dimensions: 183.0 x 30.4 x 190.0 cm
- Supreme 5 Zone Pocketed Spring
- Damask Fabric
- Plush Pillow-Top
- 15 Year Limited Warranty
- 100% Natural Latex
Ideal For
The KingKoil Mattress Sanctuary-K is ideal for those seeking luxurious comfort and support. Perfect for individuals or couples who appreciate high-quality bedding with advanced features like natural latex and pocketed springs.
Add to Wish ListS$5,669.00 U.P. S$11,338.00 9% OFF GST ABSORBED
Guide to Choose The Right Mattress
With a wide variety of mattress options available, it's essential to consider your individual needs and your bed size.
Step 1: Mattress Firmness Level
Mattress firmness is a crucial factor in determining your overall sleep comfort in Singapore.
- Soft Mattresses: Offer a plush feel and allow for sinkage, which can be more comfortable.
- Medium-Firm Mattresses: Buy these to strike a balance between comfort and support in Singapore.
- Firm Mattresses: Provide minimal sinkage and offer a supportive, stable surface for spinal support.
Step 2: Types of Mattress
Mattresses are constructed with various materials, each offering unique characteristics:
- Memory Foam: Conforms to the body, providing excellent pressure relief and motion isolation.
- Hybrid: Combines an innerspring support system with comfort layers of foam or latex. Offers a balance of support, bounce, and pressure relief.
- Latex: Made from natural or synthetic rubber, latex mattresses are known for their responsiveness, durability, and breathability.
Step 3: Additional Features
Beyond firmness and type, consider these features:
- Motion Isolation: Important for couples, motion isolation minimises the transfer of movement across the bed.
- Cooling Technology: Features like gel-infused foam or breathable covers can help regulate temperature and prevent overheating in Singapore's warm weather.
- Edge Support: Provides a stable edge to the mattress, preventing sagging and making it easier to get in and out of bed.
Step 4: Size of Bed Mattress
Mattress sizes range from the compact single which is ideal for smaller rooms, to the popular queen size which offers ample space for two. Other sizes include the super single which provides extra length for taller individuals, while a king size mattress offers maximum comfort for couples.
Bed Mattress Prices in Singapore
Mattress prices in Singapore vary significantly depending on size, type, materials, and brand. You can find budget-friendly options online starting from around $300 while premium mattresses, with advanced technology and high-quality materials can cost $16,000 or more.
Please note: Prices are subject to change due to demand and availability.
Why Buy Your Bed Mattress at Gain City?
Gain City is a trusted home furnishings retailer in Singapore, offering a wide selection of home furnishings like sofas, digital gate locks and quality mattresses for a restful night's sleep.
Here's why you should buy your next mattress from us:
- Competitive Pricing: We strive to offer the best prices on mattresses in Singapore, from reputable brands like MaxCoil, Four Star, and Dunlopillo.
- Reliable Delivery Services: Purchase your mattress from Gain City and enjoy prompt and reliable delivery service straight to your doorstep in Singapore.
- Comprehensive Warranties: Enjoy long-term peace of mind with our comprehensive extended warranty options.
Frequently Asked Questions About Mattresses
Which mattress is suitable for back pain?
A medium-firm mattress that provides adequate support and spinal alignment is often recommended for back pain. However, individual needs vary, and consulting with a healthcare professional is advisable for specific conditions before you buy a mattress in Singapore.
Which mattress is suitable for couples?
A mattress with good motion isolation can minimise partner disturbance. Size is also a factor as Queen or King size mattresses may offer more space.
What if my partner and I have different firmness preferences?
Some mattresses offer dual firmness options, with each side having a different level of support. Adjustable beds also allow each partner to customise their sleeping position and firmness in Singapore.
Which mattress is best for hot sleepers?
Mattresses with cooling technologies, such as gel-infused foam, breathable covers, or latex, can help regulate temperature and prevent overheating during sleep.