Design: Cement construction Lace-up closure offers a customizable fit 6” shaft height In-Shoe Comfort: LiteFire® is an aluminum-based waterproof and breathable membrane that reflects body heat equivalent to 400, 600, 800 or 1000 grams of traditional insulation without the weight or bulk Footbed is made with Insite® technology to create maximum arch support and reduced foot fatigue during long days Light and high-rebound EVA midsole Durability & Traction: Storm Defender® Waterproof protection keeps you dry in wet conditions A waterproof and breathable membrane is used to keep your feet dry but promote air flow and circulation FastDry® technology lining wicks away sweat for optimal comfort Rubber heel bumper is designed to provide extra abrasion resistance Texturized PU toe bumper coating provides extra abrasion resistance Vibram Arctic Grip outsole offers superior traction on wet surfaces and ice Electrical Hazard (Non-safety soft toe) offers secondary protection against incidental contact with electrical circuits of 18,000 volts or less Non-safety soft toe EH styles meet ASTM F2892-18 EH standards Styles: FP6039-M, FP6049-M