Breathable Airmesh™ lining , Stretch-fit topline binding snugs calf to keep warmth in and cold out , 10mm kick rim for hands-free removal , Self-cleaning outsole wraps the entire perimeter to provide maximum protection and stability on steep terrain Instep protector (rubber reinforcement) for added protection around hoofed animals , Added toe protection with a wrap-up toe bumper , Seamless quick-clean rubber overlay , Additional achilles reinforcement for added protection CR flex-foam bootie (5mm) with four-way stretch nylon, snag-resistant cover is 100% waterproof, lightweight, flexible, buoyant, and will form to virtually any calf girth , Comfort range of 85° F to sub-freezing conditions |