GORE-TEX waterproof membrane, exceptional breathability and waterproof performance,. Synthetic and 100% recycled mesh upper,. Waterproof zipper for quick on and off,. Bellows tongue keeps out debris,. 100% recycled webbing,. 60% recycled breathable mesh lining,. 100% recycled mesh footbed cover,. Cleansport NXTTM treated for natural odor control,. 50% recycled removable EVA foam footbed,. FloatProTM Foam midsole for lightweight comfort that lasts,. 20% recycled EVA foam midsole,. Vibram Ecostep Recycle outsole designed with 30% recycled rubber which provides added durability and improved grip on wet and dry surfaces. Men\'s shoes. Stylist Notes. Part of the Merrell 1TRLTM Collection, the leading Merrell speed hiker is updated with a zip closure and bold GORE-TEX branding. The futuristic aesthetic is engineered with a GORE-TEX waterproof membrane, synthetic leather & 100% recycled mesh, A FloatPro FoamTM midsole and Vibram EcosStep outsole, created from 30% recycled rubber.