Material: this good is made of thickened premium quality plastic. This item is wide & deep enough for your purse, backpack and so on..Organize car space : it converts your car’s headrest into a storage space, help you keep your car interior perfectly clean and organized, the headrest hook can hang groceries, handbags, purses, schoolbags, umbrellas, water bottles, shopping bags, baby supplies and so on. Don't need to worry about your shopping bags being placed on the floor or seat rolling around and spilling.Easy to install: easy for installation and removal, one-hand operation. The S type car headrest hooks have simple design and you do not need to take off the headrest, no tools required..Universal fit: sold by 4 packs and can be used conveniently, fit for most cars/ SUVs/ trucks (installation size: 0.32-0.55 inch in diameter of the headrest bar). Each item can hold up to 55 lb (25kg ), which meets the daily use in your car..360 Degrees Rotation: The hooks can be rotated 360 degrees horizontally after installing. You can swing the hooks around to either the front or back of the seat to use as desired, or hide the hooks under the headrest bar when you don't need them, space saving and perfect compatible with your car.