Different shapes, colours and materials make it possible to find exactly the right tray for the user.
Some trays are made with an edge to keep toys etc. on the plate, while others are made without to provide more freedom of movement.
Some of the trays are made with one centre bar mounted in the armrest, making it possible to swing-away the tray before placing the user in the chair. Other trays are mounted with twin bars into both armrests.
Some users might benefit from using one of the transparent trays.