Features of the Oboz Women's Sapphire 8IN Insulated B-Dry Boot Fit TIP: Length runs True to size. Lower volume with a sculpted mid-foot and a women's specific forefoot & toe box. O Fit Insole(TM) Thermal: Our proprietary insole is what we're known for. Molded to match the specific shape and construction of every pair we make, this purpose-designed Technology delivers the kind of Fit, feel and Performance that's unmatched in the industry. These thermal insoles feature an insulated top sheet for warmth and a Mylar bottom sheet to reflect heat back to your foot, keeping toes nice and cozy. Swiftcurrent Midsole: Our Women's specific Swiftcurrent Midsole provides incredible durability, stability and comfort. The women's specific cushioning EVA Midsole combined with a TPU chassis and ESS plate in the forefoot, which helps prevent stone bruising without inhibiting flex. The cold weather-specific Outsole Features our winter rubber that grips in a variety of conditions. Swiftcurrent Outsole: The Swiftcurrent provides incredible durability, stability and comfort with lugs that provide ample traction strolling down Main Street and enough grip under foot to lead you on the trail. B-DRY Waterproof: There's no denying feet sweat and trails can get muddy. There's also no denying the ability of our proprietary waterproofing system, B-DRY, lets sweat escape while keeping moisture out. 3M(TM) Thinsulate(TM) Insulation: Unmatched Density of microfibers traps warm air in to keep you toasty even on the coldest days. Molded Heel Kick: Kick back and relax, without getting your hands dirty. Our molded heel kicks means muddy boots can take a hike, hands-free