Features 1、Thicker PC environmentally friendly material, scratch-resistant rounded corners, environmentally friendly, no odor, resistant to falling and not easy to break. 2、The elastic secondary book holder can also hold more than 1,800 pages of books, and the thickness of one side can be 3.5cm. It can open the book with one hand and free both hands. 3、The book holder is free to expand and contract, and can hold thick books of A6-A3 size. The enlarged book holder design has 3 supporting points, which is more stable. 4、0°-180° free adjustment, suitable for different reading angles, button-type adjustment, simple and convenient. The spine design and non-slip grooves make reading smoother. 5、Multi-function, multi-purpose, can put books/mobile phones/tablets/paintings, etc. Portable and foldable, easy to put into the bag, read anytime, anywhere. Specification Item Type: Book Holder Material: ABS+Plastic+PC Function: Multi-function, Multi-purpose, Can Put Books/Mobile Phone/Tablet/Painting, Etc. Size: 21.5 x 30cm/8.5 x 11.8in Standard Viewing Distance: 33-35cm/13-13.8in Package List 1 x Book Holder