Veridian healthcare nice-n-cool gel mat, verticial pkg. 15. 35" x 11. 5"; revolutionary gel core absorbs body heat; provides cooling relief for one hour and easily refreshes itself while you move; decreases body temperature to promote good sleep: helps relieve night sweats and hot flashes; can safely come in contact with skin or placed under a sheet or inside pillowcase; no source of energy or refrigeration required; blue self-cover with non-toxic gel center; hand wash only, air dry; designed to be used most anywhere, over & over. .