*Our tray table is made of high quality bamboo, which can withstand shaking and tipping for durability. *Our C-shaped table has a customizable height unit that is adjustable from 16.7 inches to 30.1 inches. On top of that, you'll enjoy the 360-degree swivel phone and tablet holder that comes with the tabletop, as well as a wine glass holder. *Package includes a user manual and tool kit, and in just 5 minutes you can have your new sofa tray table set up and ready to go.