This bunk bed comes with low bunk design which is perfect for you. You can decorate the down bed without worrying 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 bare feet. Providing great support for users, the bed will offer superior experience! Description Material:Steel Size: Twin over twin Function: Bunk bed Decoration: Low bunk Numbers of package: 1 Spring box: No need Assembly required: Yes Dimensions Overall Product Dimension 77.1"L*40.5"W*53.7"H Upper/bottom bed: 40.5" x 77.1" Total height: 53.7" Overall Product Weight: 65lb Upper bed weight capability: 250lb Down bed weight capacity: 350lb Upper bed recommended mattress thickness: 6-8" Down bed recommended mattress thickness: 8-10" Package Size:79.53"Lx16.54"Wx6.69"H, 69.67lbs