Don39t let rain or cold stop your ride the defroster trail features seam sealed bootie construction thinsulate insulation and a neoprene collar to help keep your feet warm and dry even in the worst conditions a grippy rubber sole provides great stability in slippery conditionsbody geometry sole construction and footbed ergonomically designed and scientifically tested to boost power increase efficiency and reduce chance of injury by optimizing hip knee and foot alignmentthinsulate 400 g