Designed for athletic hunters and outdoor enthusiasts of all types to move fast and with confidence on tough terrain. Apex is built with an innovative construction for high-endurance treks that require a more athletic and agile boot while still providing comfort and waterproof protection. 100% waterproof construction coupled with breathable mesh linings to provide elite protection and moisture management. Surprisingly light-weight performance for great all-day comfort and fit. Equally at home on loose rocky terrain, cold/wet ground and of course, the MUCK. Dual Density Insole for All Day Comfort 100% Waterproof bioDEWIX Antimicrobial footbed Insert Topcover with NZYM for Odor Control and Moisture Management Velcro stretch collar for custom fit EVA Midsole for Lightweight Comfort and Shock Absorption Scree collar to keep out debris and prevents chafing Upper Features a Lock-Down Zipper Closure System, with a Waterproof YKK® Zipper, the Industry’s Finest and Most Durable Technical Zipper Construction Lugged Rubber Outsole for Durable Traction Breathable Mesh Lining