Featuring a GORE-TEX Extended Comfort Membrane that keeps water out but allows air in, providing a full waterproof experience whilst allowing your feet to breathe.The ENERGY sole with a Vibram outsole enhances comfort even more whilst adding stability, ensuring your feet stay covered every step of the way. The Boreas has fantastic grip across all surfaces, even wet and rocky terrain, thanks to the Vibram outsole and TPU insert, so you can feel confident in your stride every step of the way.Waterproof and breathable GORE-TEX Extended Comfort MembraneWater repellent suede leather with protective edge on toe and heelENERGY sole with Vibram outsole and PU midsole for maximum comfortTPU insert ensures additional stabilityReinforced toe section Excellent grip on any surface