This unique upright mobility Walker is a SIZE LARGE meaning it will support weight up to 350 pounds and heights of 4'10"-6'5". It has adjustable armrests (36"-49.5"). It supports upper body weight which leads to better posture, which leads to reduced back, neck, shoulder pain. Being upright also results in less fatigue as upright position increases oxygen flow and balance. Walker has 36" wide frame, lockable hand brakes, multi-terrain wheels. There is a 20"W x 16"D padded seat as well as 36" backrest height to provide stable sitting support. Unit only weighs 25.5 pounds and folds in seconds for easy transport.