The new Alpha Pursuit is built for high endurance exploration and all terrain adventure. 100% waterproof, 100% MUCKPROOF, the lace up construction provides a tailored fit while the MuckSkin overlays give additional protection without adding unnecessary weight. The notched heel collar eliminates Achilles fatigue and the rubber heel reinforcement keeps your feet always protected. This boot has a midsole made from BioLite, a best-in-class, eco-friendlier lightweight foam, as well as an aggessive rubber outsole for better traction and debris dispersion.