Top Features include: Keeps your bedside items within reach Great for holding alarm clocks, drinks, eye glasses, TV remotes & pens/highlighters Works on all Dorm Bed Posts (Friction Clamp Design Won't Harm Posts) Attachments included work on metal, wooden, circular & square bed posts The shelf works by a friction clamp design that allows it to clamp on any dorm room bedpost. Whether your post is wooden and square or circular and metal our Bed Post Shelf will work. This clamp style design won't harm your university bed as it is completely removable and can be repositioned. What's great is how this useful shelf can solve the need of keeping your items bedside! New, not in box, but does include instructions. Comes from a smoke-free home.