Features: 1.[More Comfortable] The support can be adjusted freely to find a suitable angle, which makes reading and writing more comfortable. Widened anti skid pad, stable and not easy to fall 2.[Easily Put] Easily put in the bag, read anytime and anywhere, deepen the book slot design, flat pages and smoother reading 3.[ No Installation] No disassembly, more convenient to change in one second. You can lay down and stand to put books 4.[ 30 Level Adjustable] One button up and down 30 level are adjustable, suitable for different heights and ages. Children can use it, and adults can use it 5.[Helping Children Learn Healthily] 0?180 can be adjusted freely, suitable for different reading angles. While reading and taking notes, learning is easy and efficient specification:Item Type: Book Holder Material: ABS , Silicone Function: Multifunction and Multipurpose, Can Put Books , Mobile Phones , Tablets ,Painting, Etc PackageList:1 x Book Holder NotePlease allow 0 to 2 cm error due to manual measurement. Thanks for your understanding.