All plastic shower stool allows for easy transfer into and out of the shower and provides a safe, comfortable seat for people who have difficulty standing for any length of time Conveniently sized to fit into small spaces Height adjustable legs; 16 to 21 (40.64 to 53.24 cm) Non-slip feet hold it securely in place Easy to assemble; no tools required Seat diameter - 15 1/2 (39.37) Supports up to 300 lb. (136.36 kg) U.S. Patent D439,429