These boots are 100% waterproof and temperature-rated to -40°C, with 5mm Neo-Tech waterproof insulation. They are made with seamless construction, making them 30% lighter and more durable than comparable boots, and have a hand-last rubber shell with a four-way stretch inner bootie. The outsole uses Rebound technology for comfort, and the lining features EveryDry and Bogs Max-Wick to evaporate sweat. The footbeds are removable, flex-width, dual-density EVA with Ortholite and DuraFresh, for a customizable fit. The outsole is BioGrip, which is non-marking, self-cleaning, and chemical and slip resistant. The boots also include a Bogs Stabilizer for natural fit and underfoot support.