Wyoming's Wind River Range holds forty peaks over 13,000 feet, 1300 lakes, and the headwaters of five rivers - oh, it's on your bucket list too? For those long, remote approaches, you'll need support and durability at a reasonable weight. The Wind River II boot bundles together the weight savings of EVA, the durability of PU, a waterproof/ breathable BDry lining to keep feet dry, and our BFit Lacing System to lock your heel in place. Bfit Deluxe Insole - A supremmely supportive insole, engineered specifically for Oboz shoes. The Bfit Deluxe Insole stabilizes arches, protects high-impact zones, and cost nothing extra. Molded Heel Counter - Snug heel hold that's built to last. Oboz mold this heel counter, making it extra durable against collapse. Bdry Membrane - Keep dry when the trail isn't. Oboz proprietary Bdry membrane blocks water from wet trails while wicking sweat away. BFit Lacing - Lock heels into place - effortlessly. BFit Lacing relies on a pulley system - no need to yank on laces or suffer from pinching.