Using patented technology developed for NASA, this is the blanket with Thermocules in the soft fabric that absorb, store, and release heat to prevent chills or overheating which can result in restlessness. The Smart Fabric Technology by Outlast works to continuously maintain a comfortable bed temperature and humidity, allowing you to have a peaceful night's sleep. The fabric is ideal for couples and their varying body temperatures as it will adjust to each sleeper's individual micro-climate. It is machine-washable, and naturally antibacterial and odor resistant. Made in the U.S. of 50% Merino wool and 50% Outlast acrylic. Sand, White or Blue. King. 108" W x 96" L. (4 1/2 lbs.)