Outlast Temperature Cooling Sheet Set, Yellow, King Outlast patented technology, 50 % Outlast Viscose, 50 % Cotton Sateen One king top sheet, 108-inch by 102-inch, one king fitted sheet, 78-inch by 80-inch and two king pillowcases, 20-inch by 40-inch Regulates body temperature, not too hot, not too cold. Reduces night sweats and thermal incompatibility for couples Set includes one flat sheet, one fitted sheet, two King 20" x 40" pillowcases Machine washable Questions/Comments? Please call our customer service number directly at 888-288-8781.