This is the sleep and exercise mat that cools the skin on contact for up to three hours and then regenerates in 15-20 minutes to use again, over and over to help aid in falling asleep as well as providing cold therapy for muscles and joints. Requiring no messy cords or refrigeration, the mat’s cooling effect is instantly activated by the weight and temperature of the body and lasts for three hours; it recharges automatically within 15-20 minutes of non-use. Crafted of lightweight, non-toxic material, the mat folds flat to tuck away conveniently in a tote bag or suitcase for use on any mattress, couch, or floor. 43 1/2" L x 27 3/4" W.