Description Key Features Double Sleeping Area: The kid's bed cleverly combines a platform bed with a trundle. When expanded, it offers a wide sleeping spot for your child's friend who comes over for a sleepover. When stowed, it frees up more floor space for kid's free activities. Dual 4-Tier Bookshelf: The platform bed is fitted with a 4-tier bookshelf on each side. Parents can put toys, books or clothes inside and push them into the high headboard, so the hidden storage can always guard the neatness of your kid's room. Stable Wooden Frame: Thanks to thick boards, the bed frame resists shaking. Moreover, it contains 17 reinforced slats that directly and stably support the mattress to create a restful sleeping area. The load capacity of each bed is 420 lbs. Practical Mobile Design: 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. More Superior Details: The headboard perfectly creates large storage, while it is also a comfortable place for kids to lean. By the way, the platform bed requires no box spring and the recommended thickness of the mattress is 8"-12". Specifications Color: White Material: Solid Wood, MDF, Plywood Overall Dimension (Twin): 89" x 42.5" x 40" Overall Dimension (Full): 89" x 58" x 40" Size of Platform Bed Surface (T): 75" x 39" (L x W) Size of Platform Bed Surface (F): 75" x 54" (L x W) Size of Trundle Surface: 75" x 39.5" Size of Each Bookshelf: 9.5" x 39" Size of Each Shelf: 20" x 9" Height of Platform Bed: 14" Distance Between Headboard & Bed: 7" Height of Trundle's Side Board: 8" Recommended Thickness of Mattress: 8"-12" Load Capacity of Each Shelf: 22 lbs Load Capacity of Each Bed (T): 320 lbs Load Capacity of Each Bed (F): 420 lbs Net Weight: 128 lbs (T) / 150 lbs (F) Package Includes: 1 x Kids Wooden Platform Bed with Trundle Storage Headboard