The Glacier Peak is a lightweight shell boot with classic flair. Breathable and flexible ankle high premium nylon upper. The Glacier Peak offers a water resistant construction with quick drying lining to keep your feet dry; gusseted tongue and collar keep debris out. Premier 200 gram Thinsulate insulation keeps your feet warm. Quick lace up closure allows for easy and secure adjustments; heel pull strap make it easy to get on/off Durable waterproof TPR shell ensures traction/shock absorption/good abrasion resistance in dry/wet conditions. Northside Women's Glacier Peak Insulated Cold Weather Boot