These are deluxe gusseted orthopedic mattresses. Luxurious ultra plush faux Faux Fur top / suede gusset. Mattress is a solid slab of convoluted (egg crate) foam. Covers are zippered for easy removal and laundering. Water resistant poly-canvas bottom. Medical-grade orthopedic foam core relieves joint pain and promotes better circulation. Perfect for elderly and disabled pets or those that could benefit from extra support.