The second-generation of On's most versatile trail shoe is all about more. Its got a Speedboard for more power, HelionTM superfoam for more comfort and MissiongripTM for more grip. So no matter how many miles are left, you've always got more to give.  Materials Vamp: 100% recycled polyester double layer mesh Sock: 100% recycled polyester engineered knit Speedboard: Made from nylon for speed and protection on the trail Outsole: Enhanced MissiongripTM for 50% more traction Midsole: Ultrasoft HelionTM superfoam