MPP1133 Features: * Woven from durable Outdoor Treated polyester with up to 1000 hours of U.V. protection * Base of cover is outfitted with heavy duty waterproof 300/600 Denier fabric * Slipcover is zippered for easy removal and is machine washable * Made in USA Dimensions: * Small Bed Dimensions: 30" L x 30" W x 4" H * Medium Bed Dimensions: 36" L x 36" W x 5" H * Large Bed Dimensions: 42" L x 42" W x 5" H