I first tried them 3 years ago and really don't like them. Not a lot of grip and not very consistent. The rims are also weak ... but all this was three years ago, they could be better now. If you want a pair, pay the postage and I'll send them to you .. I bought a few pair to try and there's one left, they're still in the plastic sitting in my garage, probably all frozen up and the foam crumbled by now!