Colemans ComfortSmart air beds provide not only comfort but the unique coil system contours to each individual pets body to provide firm support not found in most conventional dog beds. Once your pet lays down on their new bed they will never want to leave. Each one is constructed of tough polyoxford and cozy fleece with their covers sliding effortlessly on and off for easy maintenance and is machine washable. Specifications: ComfortSmart™ Coil System contours to your pet, providing firm support. AirTight™ System-guaranteed not to leak. Stylish enough for the house, rugged enough for camping. Round Air Bed. Size: MEDIUM For pets up to 45 pounds. Bed inflates to 32" x 6" thick. XLARGE For pets 45 pounds and up. Bed inflates to 52" x 11" thick. Usually leaves our warehouse in 1 - 3 business days.