The Cloo toilet seat riser can be adjusted to give the user a seat height of 60, 100 or 140mm (21/4, 4 or 51/2"). To achieve the highest position of 140mm (51/2"), the extra height adjusters need to be purchased separately. Fits easily onto the toilet frame, using the seat attachment with quick release nuts. The Cloo seat then simply clicks into place on the attachment. Comfy, ergonomic seat and detachable armrests offer a relaxing support, whilst seated for long periods of time. The seat can be lifted and left in the upright position for easier cleaning. Seat width 400mm (153/4"). Total width 600mm (231/2"). Width between armrests 490mm (191/4"). Height of armrests from the seat 210mm (81/4").