Featuresへ• Climashield waterproof membrane bootie lining and seamless technology on the uppers help keep your feet protected and dry• Comfort rated to 14°F, Climatherm insulation provides warmth without excess bulk• Lightweight synthetic uppers and abrasion-resistant linings allow for excellent breathability and quick-drying performancelemperature raungs are approximate based on high activity levels and can be affected by many conditions, including weather, wearer's activity level, fitness, metabolism, perspiration, circulation, exposure time, clothing and cold sensitivity.