The shelf is made of Black powder-coated metal frame, which is sturdy and environmental. easy to clean and protected from rust and is robust enough to withstand moisture, dirt.The rustic design will matches well with other furniture when put it on living room, bedroom, kitchen or office to fits your daily need. With clean minimalist look — Durable metal frame with triangle structure design, enhanced load bearing capacity and stability. The side grid prevents sliding and falling，protect your items perfectly. With this elaborate design, will never shake like other cheap shelves. 100% Pre-Assembled,just remove from box and unfold in under 5 seconds, Locking wheels included for easy moving or locking. Holds up to 440 pounds (110 lbs. /Shelf). Perfect for heavy duty storage like tools, books and Kitchen supplies. We are always committed to do our best to make sure our customers are satisfied.If you have any questions, please feel free to contact us to get immediately reply.Just try our superior quality 4-shelf foldable storage shelves.