1.The Cap Rack Made of Sturdy Metal + Double Nylon. NO PLASTICS Comes with A Easy-To-Follow Instructions. 2.ATTACHES TO DOOR with easy elastic strips over any standard door. No hassle and no difficult installation.HANG OVER A DOOR, IN THE CLOSET AND MORE: Place the cap rack almost anywhere in your house, dorm or wherever you keep your collection. It comes with an over-the-door hook that fits doors 1.5 to 1.75 in thickness. Also place on a wall or from the ceiling like a mobile.3.STAY ORGANIZED and never lose your caps. Cap rack can hold more than 16 caps if desired. Put your favorite sports cap on display any time and prevent damage to your sports collection. 4. Easily accessible, save space, keep clean and easy for hat to pick according to what else you are wearing.