Bedz King Twin Over Twin Stairway Bunk Bed with Twin Trundle, Cappuccino Stairway Twin over Twin Bunk Bed with Twin Trundle Built-in Stairway instead of ladder for easy access to the top bunk 3 drawers built into Stairway Solid Brazilian Pine; Assembly required with included tools Maximum recommended mattress thickness is 9 Inch (mattress not included)