The frame of book holder swivels to create a wider or narrower base, Increases desktop space by using less area. Easy to use: variable slope adjustment by raising the bar in the support sleeve compact and sturdy, It can hold the textbook, cookbook, ipad and more. Portable Multi-function Book Holder: This Bookstand can be folded up flat for easy storage when not in use. Fold it up and take it with you wherever you go Also great for displaying photos, plates, diplomas, and craft projects. Promotes Correct Reading Posture: This Book Holder helps you to maintain proper posture when reading over long periods of time, leading to less neck, back and eye strain. Compact and Sturdy: This Stainless Steel Book Holder is lightweight but sturdy, meaning its capable of holding large Hardcover textbooks. color: black size:19.5*13.5*16.5cm The number of shipments: 1 Note: Other items are not included here, other pictures only show the effect Due to the difference between different monitors, the picture may not reflect the actual color of the item. Because of manual measurement. Please allow deviation. Thanks