Sleep surface is filled with La-Z-Boy's® exclusive Comfort Signature Blend™ foam, an optimal mix of conventional orthopedic & memory gel foam to provide support for your pet's pressure point & back,For additional support, bolsters are filled with La-Z-Boy's premium Comfort Select™ foam with Never-Flat properties that provides superior loft & support,Flanged mattress design adds visual interest & warmth to any room in your home,Great for medium to large sized dogs that like to spread out while they sleep,Covered in quality, human-grade upholstery for durability & maximum comfort