This bunk bed comes with low bunk design which is perfect for your little baby. You can decorate the down bed for your kid without worrying he/she falling off or you can use the down bed as a storage shelf to store away stuff. The upper bed is equipped with full-length guardrail which guarantee safety. The bed is made of high-quality steel, so it won't make any noise and the ladder won't hurt your kid's bare feet. Providing great support for users, the bed will offer superior experience! 1.Made of high- quality steel, the bed provides great support. 2.Low bunk design guarantee safety for down bed user. 3.Multiple choice for you to choose: Black/ Silver/ WhiteDescription: Material: Steel Size: Twin over twinNumbers of slat: Upper bed: 12 Bottom bed: 12Dimensions: Upper bed: 40.5" x 77.1" Bottom bed: 40.5" x 77.1" Total height: 53.7"Weight Capacity: For upper bed: 150 lbs For down bed: 200 lbsRecommended mattress thickness: For upper bed: 6" - 8" For bottom bed: 8" - 10".