Muck Boot Pursuit Stealth Cool Rubber Warm Weather Men's Hunting Boot Rubber Synthetic sole Shaft measures approximately 14" from arch Boot opening measures approximately 16" around 4 mm neoprene provides comfort and flexibility, along with excellent waterproofing, shock absorption and heat retention properties; adjusts to the shape of your feet to resist blisters and chafing Spandura treatment for maximum abrasion resistance in any terrain; extended rubber coverage makes for 100% waterproof waterproof hunting boots Anti-microbial XpressCool fabric lining pulls moisture away to keep feet cool and dry; etc Sockliner reduces underfoot friction and heat build-up; comfort rated from 40 F to 95 F (4 C to 35 C) Lightweight EVA midsole for support and cushioning; rear pull loop for easy on/off Rugged rubber outsole tackles muddy terrain easily but is 10-12 ounces lighter than other Pursuit Stealth models for high activity performance