212813BLK08 Features: Maintain your flexibility in the coldest temperatures to dual-density plastic in the shell will flex when you need to keep your balance Strong and flexible, even when the thermometer drops, the Pebax shell holds up under rough conditions Anatomically molded for shin comfort, the soft tongue won"t put undue pressure on your legs Light yet warm, the EVA insulated inner boot traps warmth while cushioning your step Walk without a stiff gait, even over deep snow to the rocker sole provides a more natural step Get a grip without feeling the shock to Vibram Stalbeler rubber grips the ground while the cork midsole absorbs shock through the heel UK sizing: please use the size conversion chart to determine your UK size Specifications: Weight per pair: 5 lb 13 oz Upper: Pebax polyether block amide Midsole: cork Outsole: Vibram rubber Insulation: EVA