Nice wheels! My 9 year old loves Revive products, especially anything with cats. He wanted to get smaller wheels that would slide better than his current set up. As soon as we popped these on he was sliding and psyched! Reverts going down. The wheels are small and noticeably lighter than the 54mm spitfire formula 4's he was riding, good for hi since he's a little guy. Seemed to help him pop a little right away. I'm kinda jealous I might want a set for myself!