The Apex is a high-performance all-terrain collection built on an innovative platform for high endurance outdoor pursuits requiring a more athletic and agile boot with elite protection and moisture management. Features: 100% waterproof 4mm neoprene bootie for comfort and all-conditions performance Pull tab provides easy on and off Breathable air mesh lining facilitates air circulation to improve comfort and reduce heat and moisture Dual-density footbed with memoir foam for long-lasting comfort bioDEWIX™ anti-microbial footbed insert top cover with NZYM™ for odour control and moisture management Lightweight EVA midsole for all-day comfort and support Combining Vibram®’s all-new Arctic Grip All Terrain with XS Trek Evo and their new Traction Lug Technology for added durability and grip on wet and dry surfaces, improving traction by up to 25% Muck Boot Co. recommended temperature rating for optimum comfort: -30 ˚C/10˚C Weight: 8M 2.00 LBS Muck Men's Apex Pro Mid Waterproof