First Bogs found a way to make their most durable boots even more durable, while simultaneously making them 30% lighter. Then they found a way to make them more breathable and tougher to maximize comfort and performance. Features: 100% waterproof Durable hand-lasted rubber with a four-way stretch inner bootie Made with seamless construction – 30% lighter than comparable boots plus enhanced durability Constructed with 7mm Neo-Tech waterproof insulation Rebound technology in outsole provides lasting comfort Lined with EveryDry and Bogs Max-Wick to evaporate sweat Footbed features dual density EVA, Ortholite, and DuraFresh for optimal comfort Non-marking and self-cleaning BioGrip chemical and slip-resistant outsole Bogs Stabilizer provides natural fit and under foot support Comfort rated to -72ºF/-60ºC