I did the nimbus and sought a shoe lighter without losing the cushioning and fit that provides these and came to my feet the rider 15 with a nearly perfect cushioning in the front and back what is necessary for those who love the soft touch in this area foot, a surprising stability in the appropriate setting at the foot like a glove but do not tighten very fast with good response maybe the only but feel that the material as if they were stilted and lacks a bit of swelling the heel collar if you need some running shoes up to 15 km with total smoothness and quick in pace kilometers to my recommended user weight is 73 kg