Recommended by veterinarians, this bed generates a gentle warmth to soothe older or arthritic pets. The soft microfleece-lined interior has a layer of metalized insulation (similar to a space blanket) that radiates warmth generated by a cat's own body heat evenly. The roof provides cats with a partially sheltered, private cove, or it removes for open-air relaxation. The bottom of the unit has a non-slip fabric for stability on hard floors. The bed’s cover unzips for machine washing; the cushion and roof covering can be hand washed. Also suitable for small dogs. For cats weighing up to 30 lbs. 7" H x 20" Diam. (3 lbs.)