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Choosing a comforter specifically designed for hot sleepers may help keep people cool when sleeping.

Sleeping in hot environments can have negative effects on a person’s sleep quality. For example, having a high body temperature while sleeping can contribute to insomnia, which may negatively impact a person’s day-to-day life.

This article explains which types of comforters may help people stay cool during the night.

A quick look at the 9 best comforters for hot sleepers

A comforter is different from a duvet.

A duvet is a plain insert filled with down or synthetic fibers and used inside a duvet cover. This means that people can change the duvet and duvet covers when they want to, such as according to the season. There are varying duvet thicknesses to suit the changing temperatures throughout the year.

A comforter, on the other hand, is made out of more durable fabric than a duvet, as it is not used inside a cover. Comforters contain down or synthetic fibers. They offer an advantage over duvets in that they do not move around inside a duvet cover since a cover is not necessary.

However, comforters can be harder to wash and will likely become less soft over time.

Here are some features to look for when choosing a comforter for hot sleepers.

Outlast technology

Outlast is a brand of phase change material (PCM) that experts originally developed for NASA. It absorbs, stores, and releases heat to regulate temperature. It is common in fabrics that continually regulate a person’s temperature.

Outlast technology does not wick moisture away from the skin as a person sweats. Instead, it works to prevent sweating by controlling a person’s temperature before they become too hot and begin to sweat.

For night sweats, specialist sheets may help. Learn more about them here.

Sustainable fabrics

Choosing a comforter made from sustainable fabrics or made through responsible production methods means that it will have little negative impact on the environment.

Tencel fabric is one sustainable fabric option that manufacturers often use in comforters.

Eco-friendly certifications

A range of certifications indicates that a company sustainably makes products with safe materials.

These certifications include OEKO-TEX, which ensures that companies make products without harmful substances or unethical work practices or conditions and that the manufacturers have produced them in an environmentally sustainable way.

MNT chooses mattresses, sheets, pillows, and other bedding that meet the following criteria:

  • Certifications: MNT will choose products that have CertiPUR-US or other certifications. This means that the products are low in pollutants and free from heavy metals and volatile organic compounds.
  • Size: MNT chooses products that are available in various sizes.
  • Materials and fill: MNT selects products made from different materials and fills, such as memory foam and latex, to suit a range of sleep and lifestyles.
  • Budget: MNT features products to suit a wide range of budgets.
  • Sleep trials: MNT chooses companies that offer a sleep trial.
  • Shipping: Where possible, MNT will include shipping information, such as where the company delivers to and whether shipping is free.
  • Warranties and return policies: MNT will include products that carry warranties and clear returns policies.
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Please note that the writer of this article has not tried these products. All information presented is purely research-based and correct at the time of publication.

Medical News Today follows a strict product selection and vetting process. Learn more here.

Best for night sweats: Slumber Cloud Tencel Cumulus Comforter

  • Price: $209–269
  • Sizes: Twin XL, queen, king

This comforter uses two fabrics to help regulate temperature during sleep.

Tencel-branded fabric contains lyocell and modal fibers made from sustainable wood sources. It is known for being very soft and breathable. Tencel fabric can absorb moisture from the skin through the structure of the fabric.

This comforter also uses Outlast technology to enhance its cooling effect on the user. The Outlast PCM absorbs, stores, and releases a person’s body heat as needed during the night.

The combination of Tencel and Outlast fabric means that this comforter may prevent sweating. The Tencel fabric is designed to wick away moisture if a person does sweat overnight.

Slumber Cloud’s comforter has other features, including:

  • ClimaDry down alternative fiberfill to reduce heat and humidity
  • a 300 thread count
  • a lightweight design


  • free shipping
  • financing options for those opting for monthly payments
  • a 60-night trial


  • limited sizes available
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Best for children: Casper Humidity Fighting Duvet

  • Price: $309–459
  • Sizes: Twin/twin XL, full/queen, king/California (CA) king

This product can function as either a duvet or a comforter. It is made from a 100% cotton outer layer and an extra Merino wool layer that naturally offers moisture and temperature regulation.

According to Casper, Merino wool is finer and lighter than regular wool, so this duvet is less likely to make a person hot if they are sleeping in a warm environment.

This duvet is OEKO-TEX certified, ensuring that it has not been made with harmful substances and that it is suitable for children and babies.

The filling is ethically sourced down, which means that this comforter may not be suitable for people with allergies.

The duvet is machine-washable.


  • suitable for children
  • offers three different sizes
  • does not contain harmful substances
  • free shipping
  • 30-night trial period


  • larger sizes are expensive
  • wool content may reduce airflow
  • wool is not suitable for vegans
  • expensive
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Best for sustainable manufacturing: Buffy Breeze Comforter

  • Price: $199–279
  • Sizes: Twin/twin XL, full/queen, king/CA king

This comforter contains 100% eucalyptus fabric in the outer layer and the filling. Eucalyptus fabric is a type of Tencel material that offers moisture-absorbing and temperature-regulating properties.

The company recommends it for hot sleepers and those sleeping in hot climates. Eucalyptus fibers are also naturally resistant to dust, mites, and mold.

The Buffy Breeze Comforter is OEKO-TEX certified, which means that it has been made sustainably and without any harmful substances.

Other features include:

  • a 300 single-ply thread count
  • no essential oils
  • biodegradable

Additionally, a person will not be charged for the comforter until their 7-night free trial has ended, meaning a person can try and return this comforter without needing to pay beforehand.


  • 7-night free trial
  • 100-night return policy
  • recycled packaging
  • soft design
  • biodegradable plant-based fibers


  • dry clean only
  • company recommends using a duvet cover
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Best breathable: Comfort Classics Coolmax Comforter

  • Price: $102.49
  • Sizes: Full/queen, king

This comforter is an affordable option.

It uses patented Coolmax technology, which has moisture management technology built into the yarn. The Coolmax fibers draw moisture away from the body to help sleepers maintain a comfortable temperature.

This comforter may also keep a person dry if they sweat. The fabric is designed to be breathable and encourages airflow throughout the comforter.

Other features that the product offers include:

  • dimensions of 102 x 86 x 1.5 inches (in)
  • a machine-washable design
  • Coolmax and polyester materials
  • down alternative fill
  • a weight of 8 ounces (oz)


  • same-day delivery
  • cheaper than other brands
  • helps reduce sweating during the night
  • 90-day return policy
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Best for fibromyalgia and arthritis: Frankenmuth Woolen Mill Wool Filled Comforter

  • Price: $189–420
  • Sizes: Lap, twin, double, queen, king, CA king

This comforter uses the naturally insulating and temperature-controlling properties of wool.

The outer layer is made from 100% organic muslin, and air pockets within the wool fibers inside match a person’s body temperature beneath.

The company claims that this comforter is also suitable for people living with fibromyalgia and arthritis. This is because wool is a supportive material, and its temperature-regulating properties help keep joints appropriately warm or cool. However, this claim has no supporting research.

The manufacturer states that the comforter is hand washable.


  • 7-day return guarantee
  • 1-year warranty
  • free shipping across the contiguous United States
  • six sizes to choose from
  • is hypoallergenic


  • not available outside the U.S.
  • those in Alaska and Hawaii must contact customer service about shipping
  • wool is not suitable for vegans
  • must be hand washed and line dried
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Best for couples: Sheets & Giggles Eucalyptus Comforter

  • Price: $119.95
  • Sizes: Twin, queen, king

Sheets & Giggles offers this soft, smooth, and temperature-regulating comforter. Its outer shell is made from sustainable eucalyptus lyocell and its filling is eucalyptus lyocell and polyester made from recycled plastic bottles.

The company recommends that a person puts this comforter on a cold wash every 3–6 months and dries it on a low heat.

Additionally, the comforter has corner loops so a person can use a duvet cover if they wish.

Individuals can add a Sheets and Giggles eucalyptus duvet cover at an extra charge.

This comforter also comes with the following features:

  • three color options of white, gray, and pearl
  • moisture-wicking design
  • hypoallergenic


  • eucalyptus is insect-repellent
  • hypoallergenic
  • made from recycled polyester
  • ships orders within 24 hours


  • orders take 8–10 days to arrive in Alaska and Hawaii
  • customer reviews mention it is not effective at keeping users cool
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Best weighted comforter: Baloo Weighted Comforter

  • Price: $184–224
  • Sizes: King, super king

Baloo’s weighted comforter comes in three weights and two sizes. A person can choose between the following:

  • king 15 lb
  • king 10 lb
  • super king 25 lb

It is made with cotton exterior and interior, and it does not contain polyester or synthetic liners. It is filled with glass microbeads in the center of the comforter to provide targeted weight.

The company states that the comforter is free from chemicals and has a breathable design that is cool enough to use in all climates.

It is machine-washable, and the company recommends that a person uses a cold, gentle cycle and dries on a low heat.


  • plastic-free
  • vegan
  • free from chemicals
  • 30-day return policy
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Best antimicrobial: Comma Home Eucalyptus Lyocell Comforter

  • Price: $139–$169
  • Sizes: Queen, king

Comma Home offers this lightweight comforter that features a polyester filling made from 100% recycled water bottles. The company writes that this can help prevent the growth of microbes.

According to the company, it is hypoallergenic and temperature-regulating.

A person can also attach a duvet cover to this comforter.


  • uses recycled materials
  • soft texture
  • lightweight filling
  • free shipping


  • returns apply to unopened, unused products
  • two sizes available
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Best organic: Avocado Green Alpaca Duvet Insert

  • Price: $309–549
  • Sizes: Twin, full/queen, king/CA king

This Avocado alpaca wool comforter is available in three sizes — twin, queen, and king — and a lightweight and all-season weight.

The outer shell is made from Global Organic Textile Standard (GOTS)-certified cotton and the fill is alpaca fiber.

The company writes that both its filling and outer cotton shell is breathable and can regulate a person’s temperature as they sleep.

Avocado advises that this comforter is suitable for spot cleaning only. A person may wish to use a duvet cover with this comforter to avoid the comforter from getting stained.


  • 100-night trial
  • 1-year warranty
  • free shipping


  • spot-clean only
  • may require frequent fluffing to maintain loft
  • not suitable for vegans
  • expensive
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This table provides a comparison between the nine comforters:

PriceSizesCover materialFill materialTrial or return period
Slumber Cloud Tencel Cumulus Comforter$209–269• twin XL
• queen
• king
Tencel fibers ClimaDry down alternative fiberfill60-night trial
Casper Humidity Fighting Duvet$309–459• twin/twin XL
• full/queen
• king/California (CA) king
• cotton
• extra merino wool layer
ethically-sourced down30-night trial
Buffy Breeze Comforter$199–279• twin/twin XL
• full/queen, king/CA king
eucalyptuseucalyptus7-night trial
Comfort Classics Coolmax Comforter$102.49• queen
• king
• Coolmax
• polyester
down alternativereturns within 90 days
Frankenmuth Woolen Mill Wool Filled Comforter$189–420• lap
• twin
• double
• queen
• king
• CA king
organic muslinwoolreturns within 7 days
Sheets & Giggles Eucalyptus Comforter$119.95• twin
• queen
• king
eucalyptus lyocell• eucalyptus lyocell
• recycled polyester
lifetime returns
Baloo Weighted Comforter$184–224• king
• super king
cottoncottonreturns within 30 days
Comma Home Eucalyptus Lyocell Comforter$139–$169• queen
• king
eucalyptus lyocellrecycled water bottlesreturns within 30 days
Avocado Green Alpaca Duvet Insert$309–549• twin
• full/queen
• king/CA king
certified organic cottonPeruvian alpaca fiber100-night trial

A person can consider the following factors when shopping for a comforter:

  • Price: A person should consider their budget when researching comforters. Some filling materials may make certain comforters more expensive than others. A person should consider the features and materials they want and see how they will suit their budget.
  • Material: A person should consider how the materials used in their chosen comforter will affect their sleep temperature, comfort, allergies, and the hygiene of their sleep space.
  • Certifications: Some companies may hold environmental certifications such as OEKO-TEX or GOTS for their products. These certifications show that a company’s products do not contain harmful substances or chemicals and are manufactured using sustainable processes.
  • Size: A person should check the range of sizes available for their chosen comforter. Some brands offer a wide range of sizes, while others have a more limited range that may only be suitable for certain size beds.

Other products a person can use to keep cool during the night if they do not want to use a cooling comforter can include cooling pads, cooling sheets, and cooling mattresses.

Cooling pads

Cooling pads are mattress toppers that are made out of cooling materials or use active cooling systems. Some affordable options are made with gel-infused memory foam, which absorbs heat and draws it away from the body.

More expensive cooling pads include toppers that connect to remote-controlled cooling systems, which use water or air to cool the topper to a person’s ideal temperature.

Learn more about cooling mattress pads here.

Cooling sheets

Cooling sheets use breathable materials to help regulate a person’s temperature while they sleep.

Linen, Tencel, cotton, and eucalyptus are all popular materials in cooling sheets, as they may draw moisture and heat away from the body.

Learn more about sheets for hot sleepers here.

Cooling mattresses

Cooling mattresses often use specially designed foam layers to enhance breathability throughout the mattress. Graphite, copper, or gel-infused fibers also draw heat and moisture away from the body.

Learn more about the best cooling mattresses here.

A person’s body temperature responds to the circadian rhythms that control sleep, and body temperature tends to drop before a person sleeps.

If a person warms up before they sleep, such by taking a hot bath or shower, the body’s rapid cooling afterward can help induce sleep.

A person may also feel hot at night because of the room’s temperature or due to the materials in their mattress or bedding.

Feeling too hot during the night is different from experiencing night sweats, a potential symptom of an underlying condition. A person experiencing night sweats should contact a doctor to find out the cause and start the appropriate treatment.

The British National Health Service (NHS) recommends seeing a doctor if a person has regular night sweats that interfere with their sleep.

Night sweats can occur during menopause or when people have anxiety, hyperhidrosis, or take antidepressants.

Learn more about hot flashes during menopause.

A person should contact a doctor for advice if they are experiencing night sweats to get information on the best treatments for them.

Below are some of the top frequently asked questions about comforters.

What comforter material is best for hot sleepers?

A person may consider looking for a comforter that uses natural fibers, such as cotton or linen. These materials are breathable and may help a person regulate their temperature while they sleep.

Why does my duvet make me sweat?

Some people sweat while they sleep because the temperature of their sleep environment is too warm, or if their duvet is too thick for warmer climates. Some materials can trap heat more than others, such as wool, which is a natural insulator.

A person may also sweat overnight because of health conditions such as hyperhidrosis and anxiety, or if they are going through menopause.

A person can consider using a lightweight duvet made from breathable materials to reduce the risk of sweating overnight.

How can I stay cool while sleeping?

To stay cool while sleeping, a person may wish to try:

  • using a fan or turning on the AC
  • wearing light, breathable clothing
  • avoiding heavy or thick bedding

Feeling too hot during the night can disrupt a person’s sleep. Choosing cooling comforters, duvets, mattresses, or mattress toppers may help prevent overheating and promote restful sleep.

Cooling comforters help the body stay cool through specialist materials or dedicated technology.

People may wish to compare online reviews to assess different products’ pros and cons.