For the person that wants the durability of an all leather boot with a light molded EVA midsole. Improved fit and hiking boot construction. Waterproof Nubuck leather construction for durability CleanStream design utilizes Schoeller - dynatec high abrasion-resistant mesh panels with NanoShpere treatment for easy cleaning TekTuff material surronds ankle for greater suppport Full perforated neoprene lining Wide EEE fit with roomy molded toe box Dual-density molded EVA wedge and TPU molded plate for torsional support Full-coverage molded rubber toe cap for durability and protection Molded TPU external heel clip protects ankles and provides support High quality, non-corroding brass hardware Contoured NATO speed lacing system High quality laces Features the new StreamTread traction sole with Vibram Idrogrip 360 traction lug sole Sizing: Simms recommends selecting boots that are one size larger than your street shoe size. In the biggest breakthrough in years, Simms has teamed with Vibram to give you easy to clean, great-gripping rubber compound treads on their wading boots and river footwear. The G4 Guide, Guide, Rivershed, Headwaters and Freestone boots feature the Simms StreamTread sole to keep you upright in wet, mossy wading environments. The exclusive Simms sole uses the Vibram patented 360 lug that provides traction in all directions and is easy to clean. Simms shoes and sandals also feature Vibram non-marking soles. All StreamTread soles can accept Simms HardBite Boot Studs made specifically for rubber soles. The combination of the removable studs and the StreamTread sole offers superior traction. ECO-CONSCIOUS DESIGN FOR RESPONSIBLE ANGLERS. Invasive species such as mud snails and didymo have become a growing threat to the health of trout populations and aqua