The Speedgoat 6 GTX is now even more comfortable with GORE-TEX's Invisible Fit waterproof membrane for a lighter, more flexible construction to help avoid pressure points. Grounded in a Vibram Megagrip with Traction Lug outsole for increased bite on loose soil, this trail icon employs a foot-cradling heel bolster, lightweight, responsive midsole compound, and a protective toe rand for charging through the rough stuff. Bring it, weather. Features. 100% recycled polyester mesh. Waterproof GORE-TEX Invisible Fit with 70% recycled polyester face fabric. Bolstered heel collar construction. Protective toe rand. Compression molded EVA midsole. Vibram Megagrip with Traction Lug outsole. 5mm lugs. Smooth Meta Rocker. Molded EVA sockliner. Vegan. Laces with 70% recycled nylon and 30% recycled polyester (excluding aglet).