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.