K&H Pet Products KH Mfg Coolin Pet Gray/Blue Pet Cot Cover Fits the K&H large Pet Cot frame 600 Denier nylon fabric is water resistant and is resistant to bacteria, mold and mildew Cooling' Core center is 17" x 28.5" Exchange covers in minutes to keep pets cool on those hot summer days and for those "naturally warm" pets Great for indoor, outdoor and travel use and includes a one year manufacturer's limited warranty