The Upper Extremity Support Tray fits easily on to the Trotter Mobility Chair and has a number of functions making it a very versatile accessory indeed.The tray can be used as a platform for personal items or food and with a safety lip that goes around the entire perimeter of the tray things are prevented from falling off. The tray also doubles up as a support aid that provides unwavering support and stability to the trunk area. The Upper Extremity Support Tray is made from sturdy material and is easy to wipe clean.