I am on my second set of Loopwheels. I bought the first set of regular ones for my first active chair and immediately fell in love with them. I really struggle with back pain and Loopwheels take out lots of the vibrations and make the ride much smoother. So I used my chair lots more and got really fit and hooked on exercise. As a result, I lost 4 stone. That meant there was room for two of me in my chair and I ended up having to get a new one. As a reward for all that effort, I treated myself to Loopwheels Urban. They are lighter and they look really slick. People often stop me to ask about them and admire the engineering that has gone into them. I wouldn't be without them now. I love the carbolife pushrims too - really grippy, even in the rain.