Powell Bauble Girls Twin Size Study Loft Bunk Bed Silver frame with "Bauble" decoration Includes desk in silver PVC laminate Only use a twin size mattress that is 74"-75" long and 37-1/2"-38-1/2" wide with a thickness not to exceed 6" on the upper bunk (not included) Upper shelf for added storage and a separate silver ladder Meets all minimum requirements of ASTM F1427-04 and U.S. CFR Title 16 Part 1513.