The SIIG CE-MT3911-S1 Adjustable Foldable Riser Stand Holder for 17" Laptops & Smart Phones offers 9 levels of tilt adjustment for optimal ergonomics, preventing neck and shoulder pain. Its solid construction, featuring high quality ABS and aluminum materials, can support up to 22 lbs (10kg) and is suitable for various laptops and tablets, including Macbooks and Chromebooks. The built-in folding legs allow for additional 3" height adjustment, while the retractable stopper keeps your device in place. Use the retractable smartphone stand for easy access to your phone, creating a comfortable and organized workspace.