This cooling blanket on Amazon has excellent ratings (4.3 stars out of over 1500 ratings) and I personally have one!  If you get hot at night, this is what you need!

It’s the LUXEAR Cooling Blankets with Double Side Cooling Effect – they come in throw size, twin/full, queen/full, and king size.

Throw size – $22.99 + a coupon for an extra $10 off!

Twin/full – $25.49

Queen/full – $35.19

The queen/full size is what I have – in the pretty ocean pattern!

About this item

• 💦 DOUBLE COOLING TECHNOLOGY – The cooling blanket is made of Arc-chill cool technology fabric on the top side, which quickly absorb human body heat to keep cool all the night. Incorporates Jade Nano-particles into the fabric, it has a high specific heat capacity to lower body temperature by 2~5 °C and relieve muscle fatigue, relax body, makes people feel super cool, comfortable and breathable! LUXEAR summer cool blanket gives you a double cool feeling!
  
• 🌸 EASY TO CLEAN AND CARE – Hand wash or machine wash (on slow/gentle setting) with water (temperature below 30 degrees C/86 degrees F), hang the soft summer blanket vertically on the clothes hanger, and dry the blanket in a cool and ventilated place: it will then resume its original size. PLEASE NOTE: don’t put the queen cooling blanket in the dryer or dry it in sun; don’t bleach or iron. We recommend that you put this cool blanket in the laundry net bag to prevent tangling or damage.
• 🌊 ULTRA SOFT AND BREATHABLE MATERIAL FOR VERSATILE USAGE – The fabric is super soft and breathable like the sea breeze, which quickly take away the summer heat and humidity. Four sizes can be selected – The breathable soft cooling bed blanket is suitable for watching TV, relax on the sofa or bed indoors or outdoors, and more places like kid’s room, camping, in the car, travel, airplanes to meet your different needs. It will be the best companion for your family life!