InTheHouse Summer Pet Bed Cooler Dog Cat Cooling Mat Laptop Cushion Pad Gel Multifunction S: 1.5 lb, 16" x 12" / 40 x 30cm; M: 2.3 lb; 20" x 16" / 50 x 40cm; L: 3.7lb, 26" x 20" / 65 x 50cm; XL: 4.4lb, 35" x 20" / 90 x 50cm Material: Nylon with two-layer PVC coating + hydrophilic polymer gel Easy to maintain--just gently wipe it clean No need to keep in cold storage before use, just use it directly!! Multifunction: can be used as laptop cooler