The Spinergy FLEXRIM is a revolutionary product that is changing the way people roll. With the urethane material holding the pushrim onto the rim, it allows the user to push with out ever touching the tire. The ultra-light and extremely strong material allows the pushrim to flex in and give the wheelchair user an extra inch or so when squeezing into very tight doorways. This product is unlike anything offered by any other company and a must have for everyday users of wheelchairs. This product is so great we made a seperate website just for it. Please visit www.flexrim.com to get details on how this wheel can make your life better.