You can use this with one more layer on top even in winter ♪ It's a cooling mat with a pillow ♪ Your dog or cat can rest their head or chin on it, and the material is soft and comfortable. With its cool-touch fabric, your dog or cat will stay cool and comfortable! Cooling Pet Mat with Pillow, Pet Bed - Size (approx.): Width 40 x Length 60 x Height 10 cm - Color: Green - Back: Non-slip processing - Material: 75% Polyester / 25% Nylon Cooling material Washable!