Milliard 2nd Generation Pet Cooling Gel Mat/Pet Bed, Extremely Comfortable and is Nontoxic Special endothermic gel keeps the pad cooler than the surrounding air so they can chill out anywhere. 2nd-gen pet mat is formed from a new mold-repellant polyurethane compound to keep it clean and resist corrosion when left outdoors and is puncture resistant. Easy to clean off dirt and debris. Great to place in your cat or dogs crate or dog bed. Recharges by itself, for extra quick recharge or for an added boost you can place in your refrigerator for 15-20 minutes. Measures - 15x12inches and is nontoxic. We also carry a larger dog size measuring 36x27inches