Easy to Install: The bed side tray is no tools are required just install. size 36 x 20 cm legnth expendable 36-60 cm, and can be used work space, bookshelf, food tray, and nightstand. Space Saver: The bedside shelves for bed great to your nightstand, you can keep books, coffee, phone and snacks on it for easy access, 15 kg/ 33 lb.