The Sealy Defender Water Resistant Orthopedic Dog Bed is perfect combination of chipped Memory and Orthopedic Foam. With over 90% Memory Foam in every chamber, this bed is guaranteed to cradle your pet as they lay down better than any other bed in the market. The 10% of Orthopedic Foam adds firmness and support to ease your pet’s joints and bones throughout the night. The Defender Orthopedic Dog Bed is Baffled and Chambered to prevent shifting of the foam to the extremities of the bed so that no matter how much your pet shifts and moves the bed is guaranteed to hold its shape and provide comfort and support in all points. A bed so comfortable you might just tell your dog to move over!