The Outmax is the next evolution in high-performance, all-terrain footwear. The comfort-first BioLite foam midsole offers lightweight cushioning while the rugged outsole featuring 4mm lugs and deep flex grooves delivers stability, traction, and protection across any terrain. Constructed with 3mm of Muck's signature neoprene and treated with a durable water repellent (DWR) finish, it's ready for whatever the elements throw your way. A TPU shank and MaxFit Core footbed provide all-day support and comfort. The Outmax was built to outlast and outperform. 100% Waterproof, 100% MUCKPROOF BioDEWIX(TM) Dry with NZYM(TM) uses natural, plant-based enzymes that break down odor-causing material in sweat and keeps your feet fresh BioLite foam midsole for exceptional underfoot comfort Breathable mesh lining MaxFit Core BioLite footbed provides all-day comfort and support Rugged rubber outsole with 4mm lugs and deep flex grooves for traction and debris expulsion TPU shank for stability and heel bevel to reduce fatigue