Breathable, comfortable mountain running shoe designed for maximizing speed. Athlete-inspired and built for speed, this is the shoe for mountain runners looking to move faster on technical trails. The midsole&&';;s rocker geometry drives propulsion and is made from InFuse, a light, highly responsive EVA and Polyolefin composition that provides rebound and absorbs shock. The grippy Vibram Megagrip outsole uses LITEBASE technology to shed weight without sacrificing performance, and aggressive lugs deliver a confident bite. The fit locks tight, and a knit collar seals out debris. Technical features Breathable Lightweight Abrasion resistant Footwear construction Integrated tongue pocket tucks away laces to prevent snags and untying MatryxA(R) Micro upper weaves PU-coated recycled polyester fibres wrapped around a nylon core to deliver outstanding durability, fit, flex, and breathability for minimal weight Knit collar seals out debris and integrates with the tongue to create a secure, comfortable sock-like fit Extended U-throat construction provides more flex, better breathability, greater comfort Midsole&&';;s rocker geometry aids propulsion Lightweight, responsive InFuseA(R) EVA and Polyolefin midsole absorbs shock and is highly responsive Footwear geometry Deep, wide 6mm lug pattern provides grip on wet, muddy trails Lug pattern is patterned for grip on steep ascents and descents Offset (Stack height): 6mm (28.6mm : 22.6mm) Footwear outsole construction VibramA(R) Megagrip outsole delivers durable, surefooted performance across a range of conditions LITEBASE technology reduces the overall sole weight through a reduction of the sole thickness to shed weight without sacrificing performance Weight (1/2 pair) 292g / 10oz Activity Mountain Run