This Twin/Twin White Wooden Platform Bed w/ Trundle Storage Headboard Bookshelf is fitted with a 4-tier bookshelf on each side. Cleverly combines a platform bed with a trundle bed for guests and sleep overs! To maximize the space, the platform bed includes smooth and stable wheels to support the rolling trundle and 2 mobile bookcases, allowing for saving more space. Cutout handles included also make pushing and pulling easier. The headboard perfectly creates large storage. This platform bed requires no box springs and the recommended thickness of the mattress is 8"-12". Assembly RequiredMaterial: Solid Wood, MDF, PlywoodDimensions (twin): 89" x 42.5" x 40" Weight: 128 lbs.