Whether you're heading for the hills or just need a little extra traction, the Inov-8 TrailRoc 255 is designed to tackle it all. Synthetic mesh covers the upper for lightweight, breathable coverage while the performance last is designed for a snug fit. The Tri-C compound sole uses multiple rubbers and lugs for optimal traction on trails. The 6mm differential from heel to toe allows for a more natural stride. Wt. 9.0 oz.