Electronictechcrafts High-quality!Practical Convenient Auto Car Vehicle Seat Headrest Bag Hanger Hook Holder highly appriciate all customers&#039; opinions to improve the selling ,also if anything you unsatisfied, pls contact our customer service department for probable best solution. electronictechcrafts provide you various kinds of great products at the lowest possible prices, welcome to our store and get what you want !!! Made of PP material and aluminum alloy,very strong; Size:29.5x11.5x5.2cm/approx.11.6x4.5x2inches.2cm(12x4.3x2inches) Enough to withstand your carry-on items,such as pocket book, gym bag, grocery bags, backpack, umbrella,ect. Holds up to 20kg(Approx.45 pounds) Hooks can adjustment(left and right), suitable for different width of the car seat Sponge can effectively avoid the seat scratches and as the armrest, hold up very comfortable