The Indestructible Folding Rest Mat, model PM15, is a child's rest mat. It has a rugged 3-ply cover with nylon binding that is easy to clean, moisture-proof, and flame-retardant. OPTION: Heavy-duty fitted polyester/cotton sheet. DIMENSIONS (LxW): Opens to 48 x 24 inches; folds to 12 x 24 inches; 2 inches thick. WARRANTY: 5-year guarantee.