【STURDY METAL FRAME】 Solid Steel construction with a lead-free powder-coated finish. Designed to accommodate a standard twin size mattress (sold separately) and upper bunk supports up to 220 lbs. Comes with two optional metal brackets to affix it to wall for increased stability. Pads on the bottom of legs protect your floor from being scratched 【SPACE SAVER】 Bonnlo Loft bed is ideal for space-saving needs. There’s plenty of room for user customization of the area underneath (where you can put a desk, chair, rug, shelf, and toys, etc.) Perfect for kid’s room, dorm or guest room, or any other limited floor space 【SECURED LADDER】 Instead of narrow and slippery circular steps, our Bonnlo Loft Bed has upgraded built-in ladder with wide flat ladder rungs and rubber covering, making it comfortable and safe to climb. Ladders could be attached to either side to fit your requirement