There are only a few key measurements needed for this great chair because is it so adjustable. The key ones are the following:
Seat width: this should be a close hip measurement usually about the same width as your everyday chair
Seat depth: typically the seat depth is 2" shorter than your everyday chair to allow for your feet to tuck
Tall or Short frame: tall frame choice is recommended for adults and short for children
Wheelbase: use the chart on the order form to determine which is based on the seat depth
Wheelsize: use the chart on the order form to determine which is based on the rear seat height, most players want to play in as tall as a position as possible and use the rear seat height adjustability feature to create the seat slope needed to play in their best position.
Key options that we recommend are the double anti-tip option, the rear frame protector which is needed for tournament play, cushion and a click strap or two.