Self-heating Pet Bed: Such pad can effectively keep your pet warm in cold weather. It is ideal for cats, rabbits, puppies, aging and arthritis pets. Five-layer Heat Preservation Design: Our self-heating pad is filled with a 5-layer structure and 3 layers of heat-generating and warm-keeping materials, which are better than those on the market. Safety Guarantee: No battery or cable is needed, this kind of automatic heating pet blanket can reflect and retain the pet's own heat, making them warm and comfortable. This pad is very suitable for use in sofas, floors, dog beds, cat habitats, pet carriers and outdoor cat houses. Multi-size pad can be easy to clean, machine washable and hand washable. Color: gray, brown, dark blue(optional) Size: S: about 40 x 50cm / 15.7 x 19.6in M: about 48 x 70cm / 19 x 27.5in L: about 58 x 88cm / 22.8 x 34.6in Material: The first layer: super soft fluff Second layer: soft thermal insulation cotton Third layer: warm and patiently scratching the wool cloth Fourth layer: heat storage and heat preservation materials Fifth layer: wear-resistant non-slip oxford cloth Upgrade: it uses upgraded silent aluminum foil to reduce noise. Suitable for: cats, dogs, rabbits and other pets, can be placed on the ground, pet nest, sofa, car, etc. Packing List: 1 x Heating Pet Pad