The Pet Cooling Mat Is Made From Phase Change Material (Pcm) And Is Proven To Lower Your Dog'S Temperature By 7 Degrees For Between 2 And 6 Hours. The Pcm Is Used Within The Aerospace And Health Industries And Changes Between Liquid And Crystal Formats Depending Upon The Exterior Temperature. After Use, The Mat Can Be Kept In A Cool Place And The Mat Will Recharge, Ready To Be Used Again. The Mat Is Non-Toxic And Environmentally Friendly And Can Be Simply Wiped Over To Remove Any Hairs, Dust Or Dirt.