Structures Rollaway Folding Guest Bed with Premium Gel Memory Foam Mattress - Cot Size Four-inch medium-plush mattress with a 1-inch layer of ventilated gel-infused memory foam at the surface and 3 inches of supportive base foam Lightweight fold-up design and wheels offer easy transport and storage Spring-supported deck absorbs body movement for comfort and support Durable steel frame is engineered for maximum support and durability 31" x 74" mattress has an ultra-soft velour cover made of rayon from bamboo; 5-year U.S. warranty