The bookcase is made of stainless steel and steel with polished and painted surface, which is strong, smooth, rustproof and unbreakable.The bookcase can be quickly folded for convenient storage.You can carry and store it in a backpack for outdoor activities without taking up too much space when not in use.Length: 21.1cm, Width: 16cm.The book holders with different notches on the movable backrest can be adjusted in height and angle as needed.The metal adjustable reading stand made of ergonomic design can reduce pressure on the head and neck and bookends children can effectively correct poor reading positions.The bookends can accommodate recipes, music books, magazines, textbooks, drawing paper, documents, tablets, etc. and can also be used in kitchens, schools, offices, libraries, dormitories, etc.