The Apex Collection, all new from The Original Muck Boot Co. The Apex is a high performance boot built on an innovative platform for high endurance outdoor pursuits requiring a more athletic and agile boot. 100 percent waterproof and coupled with breathable mesh linings to provide elite protection and moisture management. The upper features a lock down zipper closure system, a natural scree collar and surprisingly lightweight performance for great all day comfort and fit. Equally at home on loose rocky terrain, cold and wet ground and of course, the Muck.