Sock-Fit Plus construction provides maximum lightness, precision and agility, wrapping the foot like a sock; Composed of water-resistant microfibre combined with Win-Therm membrane; Rubber band protects the toe; Water-resistant lining composed of fabric combining Primaloft for maximum insulation and Polartec for water repellency and breathability; BOA Fit System offers a micro-adjustable fit for maximum customization and foot wrap, engineered to perform in toughest conditions; Additional Velcro system provides more stability; Carbon Fibre mid sole; Carbon sole with 6 screw (4 on the toe and 2 on the heel); Compatible with dry-tooling crampons (Not included)