Slumber 1 Youth 6 Bunk Bed Mattress with Moisture Barrier: * 6"" tight top mattress * Treated with a moisture barrier to repel stains and wetness * Perfect for bunk beds * No flip * Increased motion separation: springs provide undistributed rest * Constructed to adjust individually to your weight and body shape * Coil spring bunk bed mattress is made of heavy-gauge steel for durability and comfort * Revolutionary rebound technology mattress expands to original shape in minutes when unpacked * 6" bunk bed mattress is available in twin and full sizes * Product dimensions: * Twin: 39" x 75" * Full: 54" x 75" * All youth bunk bed mattresses comply with current CFR 1633 regulations of CFR 1632 and1633 * Meets CPSC regulations and certification