The optional Tray has plenty of room for a communication device and other activities. It has an easily cleanable surface and tool-free angle adjustment. For the Small & Medium Prone Stander the Tray inside width (widest point) is 22.5 in. and the Tray inside length is 17.5 in. For the Large Prone Stander, the Tray inside width (widest point) is 29.5 in. and the Tray inside length is 17.5 in. Match Tray Size to the Size of the Stander Frame.