Outlast Temperature Regulating Standard Sized Pillowcase, White Regulates body temperature, not too hot, not too cold. Reduces night sweats and thermal incompatibility for couples Includes two standard 20 " x 30" pillowcases Machine wash and dry 350 Thread count, sateen weave, 50-percent cotton / 50-percent Outlast Two standard pillowcases, 20-inch by 30-inch Machine washable