Bully beds Orthopedic Memory Foam Dog Bed - Waterproof Bolster Beds Large Extra Large Dogs - Durable Pet Bed Big Dogs Created for large breed dogs and includes a 20 year No Flat warranty. Medical grade orthopedic, non-toxic, joint supporting memory foam. Hypoallergenic. Specially designed dog bed to help soothe arthritis, joints and hips. 100% waterproof internal cover with a soft, durable and washable outer cover. 7" Thickness - 2.5" of 4.5 lb memory foam top with 4.5" of 2 lb support foam base. Dimensions: Medium - 34 L x 22 W x 4 T | Large - 48 L x 30 W x 7 T | X-Large - 52 L x 34 W x 7 T | XX-Large - 60 L x 48 W x 7 T Medium - 34 L x 22 W x 4 T Large - 48 L x 30 W x 7 T X-Large - 52 L x 34 W x 7 T XX-Large - 60 L x 48 W x 7 T