Quick Answer: Effective cooling throws use bamboo viscose, Tencel (lyocell), or phase-change materials that actively manage moisture and heat. Look for open-weave or jersey-knit construction rather than tight weaves. Avoid anything labelled "cooling" that is actually satin polyester, which feels cool to the touch but traps heat within minutes. A good cooling throw costs $40-$100 and replaces your summer duvet. It does not replace a breathable mattress, which handles 90% of your body's heat dissipation during sleep.
Brad, Owner, 40+ years of experience: "We have been helping Brantford families sleep better since 1997. Every customer gets personal attention, honest advice, and the kind of follow-up service you just do not get from big box stores."
You want a blanket because the weight and the coverage feel right. But you do not want the heat that comes with it. This is the dilemma that sells cooling throws. The market has responded with dozens of products that promise to keep you cool while still giving you the comfort of being covered. Some of them work. Others are regular blankets with clever marketing.
The difference comes down to materials and construction. Understanding what actually cools and what just feels cool for the first thirty seconds will save you from buying a $60 blanket that ends up at the bottom of the closet.
What Makes a Throw Actually Cool
There are two mechanisms that make bedding cooler: moisture management and heat conductivity. The best cooling throws use one or both.
Moisture-Wicking Fabrics
When you sweat at night (everyone does, even lightly), the moisture needs somewhere to go. If your blanket absorbs and then releases that moisture into the air, evaporative cooling happens. If the blanket traps moisture against your skin, you get clammy and warm.
- Bamboo viscose: Absorbs moisture well and releases it through evaporation. The fibre structure has micro-gaps that promote airflow. Bamboo throws feel noticeably cool against the skin and stay cool longer than cotton. They are also softer than cotton, which is a bonus but not the point.
- Tencel (lyocell): Made from eucalyptus wood pulp. Absorbs 50% more moisture than cotton and releases it efficiently. Tencel is often blended with cotton for structure. Look for blends that are at least 50% Tencel to get the cooling benefit.
- Cotton (percale weave): Natural cotton with a percale weave (one-over, one-under) is breathable and cool. It is not as moisture-wicking as bamboo or Tencel, but it is widely available, affordable, and a significant improvement over synthetic alternatives.
Heat-Conducting Materials
Some cooling throws use materials that actively draw heat away from your skin through thermal conductivity.
- Phase-change materials (PCMs): Microscopic capsules woven into the fabric that absorb heat when your temperature rises and release it when the temperature drops. This smooths out temperature fluctuations throughout the night. PCM blankets genuinely work but are more expensive ($80-$150) and the effect diminishes after about two hours as the capsules saturate.
- Nylon or jade-infused fibres: Some cooling blankets use nylon or mineral-infused fibres that feel cool to the touch because they conduct heat away from the skin faster than cotton. This is the "cool side of the pillow" effect. It is real but temporary. Within 15-20 minutes, the material reaches skin temperature and the cooling sensation stops unless there is also moisture wicking happening.
What to Avoid
Satin polyester blankets marketed as "cooling" are the most common disappointment. They feel smooth and cool for the first minute because the smooth surface conducts heat from your skin quickly. But polyester does not breathe. It does not absorb moisture. Within twenty minutes, moisture and heat are trapped between you and the blanket. You end up warmer than you would be with a basic cotton throw. If the label says polyester, microfibre, or "silky smooth" without mentioning moisture wicking, it is not a cooling product.
Construction Matters as Much as Material
Two blankets can use the same bamboo viscose fabric and perform very differently based on how they are constructed:
- Open weave / jersey knit: Allows air to pass through the fabric. This is what you want for summer sleeping. The blanket provides coverage and light weight without trapping a layer of warm air against your body.
- Tight weave / sateen: Smoother and heavier. Blocks more air movement. Better for a living room throw on a cool evening but not ideal for sleeping hot.
- Waffle weave: The textured surface creates small air pockets that promote circulation. Waffle-weave cotton or bamboo throws are excellent for hot sleepers because the air pockets prevent the fabric from sitting flat against your skin.
Weight also matters. A cooling throw should weigh 500-900 grams for a single/twin size. Anything heavier starts to act as insulation regardless of the material. The point of a cooling throw is coverage without heat buildup, and that requires keeping the weight low.
Cooling Throws vs. Replacing Your Duvet
If you are sleeping with a thick duvet and adding a cooling throw on top or alongside it, the throw is not going to help. The duvet is the problem. A 10.5 tog winter duvet traps enough heat to override any cooling throw underneath or on top of it.
For hot sleepers in summer, the approach should be: replace the duvet entirely with a lightweight cooling throw or a thin summer duvet (3-4.5 tog). A bamboo or Tencel throw at 300-600 GSM provides enough coverage to feel comfortable without the heat retention of a traditional duvet.
In winter, you might layer a cooling throw closest to your body with a warmer duvet on top. The cooling throw manages moisture against your skin while the duvet provides insulation from the cold room. This layered approach lets you kick off the duvet if you overheat without losing all coverage.
Ontario Seasonal Bedding
Southern Ontario's temperature range makes single-duvet sleeping impractical for much of the year. A practical setup: lightweight bamboo or Tencel throw for June through September, a medium tog duvet (7-8 tog) for spring and fall, and a warm duvet (10.5+ tog) for December through February. Three bedding configurations for three seasons eliminates the overheating problem that comes from using winter bedding in September because you have not made the switch yet. Most of us have done this.
8 min read
The Mattress Still Matters Most
A cooling throw handles the top surface of your sleep environment. Your mattress handles the bottom 60% of your body contact surface. If your mattress traps heat, a cooling throw provides marginal improvement. It is cooling one side while the other side heats up.
The most effective approach for hot sleepers is breathable from all directions: a pocket coil mattress that allows airflow below, cotton or bamboo sheets at the middle, and a lightweight cooling throw on top. Each layer breathes. Heat and moisture can move outward in every direction.
At Mattress Miracle, the ComfortCare at $1,079 with 690 pocket coils provides the foundation of that airflow system. The gel-infused comfort layers handle the transition from body to coil, and the coil structure vents heat continuously. Pair it with breathable bedding and a cooling throw, and the combination addresses temperature from every angle.
Shop: Cooling Mattresses at Mattress Miracle
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Call 519-770-0001Frequently Asked Questions
What is the best material for a cooling throw?
Bamboo viscose is the best all-around choice for cooling throws. It wicks moisture better than cotton, feels naturally cool against the skin, and softens with washing. Tencel (lyocell) is a close second with slightly better moisture absorption. Cotton percale in a waffle or open weave is the most affordable option and still performs well. Avoid polyester and microfibre, which trap heat and moisture.
Do cooling blankets really work?
Cooling blankets made from bamboo, Tencel, or phase-change materials do reduce heat buildup compared to standard polyester or heavy cotton blankets. They work by wicking moisture and allowing airflow rather than trapping heat. The effect is real but has limits. A cooling blanket on a heat-trapping foam mattress in a warm room provides modest improvement. Combined with a breathable mattress and a cool room, the effect is significant.
How do I wash a cooling throw?
Most bamboo and Tencel throws can be machine washed on cold or warm (not hot) and tumble dried on low. Avoid fabric softeners, which coat the fibres and reduce moisture-wicking ability. Bamboo gets softer with each wash. Phase-change material throws may have specific washing instructions to preserve the PCM capsules. Check the care label. Overheating in the dryer can damage temperature-regulating treatments.
Can a cooling throw replace a duvet?
In summer (room temperature above 20°C), yes. A bamboo or Tencel throw at 300-600 GSM provides enough coverage without the heat of a traditional duvet. In cooler months, layer the cooling throw closest to your body with a warmer duvet on top. This gives you moisture management at the skin level and warmth from the outer layer.
What bedding combination is best for hot sleepers?
Cotton percale sheets, a lightweight bamboo or Tencel throw, and a pocket coil mattress that breathes. This combination allows heat and moisture to move outward from every surface. At Mattress Miracle, the ComfortCare ($1,079, 690 coils) provides the breathable foundation. Visit 441 1/2 West Street, Brantford, or call (519) 770-0001.
What is the difference between cotton throws and blankets, and which is better for Canadian bedrooms?
Cotton throws and blankets overlap in function but differ in size, weight, and intended use. A cotton throw is typically 50 x 60 inches or 50 x 70 inches - smaller than a blanket, designed to be draped over a sofa or the foot of a bed for quick warmth or as a decorative layer rather than as primary sleep bedding. A cotton blanket is typically 66 x 90 inches (full/double), 78 x 90 inches (queen), or 90 x 108 inches (king) - designed to cover the full bed as a primary sleeping layer or as a mid-layer beneath a duvet. The distinction matters for Canadian bedrooms: a cotton throw is perfect for spring and fall when the bedroom temperature fluctuates and you want something easy to add or remove without changing the full bedding setup; a cotton blanket is a better investment for year-round use as a foundation layer. Cotton is an ideal throw and blanket material for Canadian bedrooms because it is fully machine washable at 60°C (important for allergen management), breathable in summer, and can be layered in winter without creating the heat-trapping effect of synthetic fleece or polyester. Bed throw blankets specifically refers to using a throw-sized textile at the foot of the bed for style and light warmth - a widely used decorative technique in Canadian hotel and condo bedroom design. Cotton knit throws from Canadian retailers: Simons ($49 to $99), Article ($79 to $129), Structube ($59 to $109). Cotton woven blankets: IKEA Indira or Ingabritta lines ($19 to $49), Hudson's Bay cotton flannel blankets ($79 to $149). Talia says: "A cotton knit throw at the foot of the bed is one of the easiest things to do for both the look and the warmth of a bedroom. It reads as styled without any effort." Browse our bedding accessories collection for throws and blankets, or our cooling blankets guide for breathable options.
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Mattress Miracle
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Phone: (519) 770-0001
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Visit Our Brantford Showroom
We are located at 441½ West Street in downtown Brantford. Free parking available. Our team does not work on commission, so you get honest advice based on your needs.
Mattress Miracle , 441½ West Street, Brantford, ON · (519) 770-0001
Hours: Monday–Wednesday 10am–6pm, Thursday–Friday 10am–7pm, Saturday 10am–5pm, Sunday 12pm–4pm.