MATERIALS Made of high quality stainless steel and steel with polished and painted surfaces, strong, smooth, rust-proof and not easy to break.The collapsible portable bookkeeping reading stand folds up quickly for easy storage.You can carry and store in a backpack for outdoor activities and it won't take up much space when not in use.6 adjustable positions Length: 21.1cm, Width: 16cm.The Ketiee bookshelf with different notches on the removable backrest can be adjusted in height and degree as required.Ergonomic Design The ergonomically designed metal adjustable reading frame can reduce head and neck pressure, and spelling children can effectively correct poor reading posture.Ketiee lettering for recipes, music books, magazines, textbooks, drawing paper, documents