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 a cushion and a click strap, or two.