Elenker Knee Scooter is a durable and comfortable 4-wheel mobility aid. For those experiencing pain or discomfort following foot surgery, breaks, sprains or ulcers, the Knee Walker is a simple, comfortable, durable and pain-free crutch alternative.This Knee Scooter designed for users of various heights and body types, the steering column adjusts from 32"–40" and the knee pad column adjusts from 17"–21" and has a maximum weight capacity of 300 lb.