Excellent Crutch Alternative: Using crutches requires extensive upper body strength, rubs under your armpits and is unstable. This knee walker is made for both indoor and outdoor use, it is a hands free / pain free crutch alternative and offers the most versatility among knee walkers. Comfortable: High elastic soft knee pad, absolute comfort when using, The scientific curved bottom frame can provide better support. The specially designed shock absorption function makes it more comfortable during use. Security & Stability: 8 ront wheel and 8 rear wheel,easy maneuvering. The VitaSophy Knee Walker offers peace of mind with its easy-grip handlebars and dual rear braking system.