Versatile trail runner excelling on varying terrain especially under 30k outings Weighs in at an exceptionally lightweight sub-10oz (size 10.5) Mid-volume fit ideal for medium to narrow feet Features one of Vibram's stickiest outsoles - Megagrip Seamless tongue construction ensures superb comfort without pressure points Rounded "Alpine Rocker" sole design and well-balanced cushioning achieve a dynamic, responsive run