Tough Ripstop™ Giant 7" Rectangle Orthopedic Dog Bed MattressThis super thick orthopedic mattress is built tough! Featuring a heavy duty ballistic fabric liner thats significantly stronger than the covers of regular beds, our Tough Ripstop Giant 7" Rectangle Orthopedic Dog Bed mattress wont break down or wear out, even under hard use and heavy play. The solid foam interior offers firm support for the joints, hips, and spine, making it the perfect cushion for older pups or big, heavy dogs. Mattress only, cover