100% waterproof, ozone-resistant black rubber compound shell with high tensile strength and abrasion resistance. Superior performance in tear strength, ozone deterioration and buckle pull-out. 90 defined heel increases stability on ladder rungs. 3M Scotchlite Reflective material for visibility in low-light conditions. Deep heel and aggressive abrasion-resistant Hex-Tread outsole for slip-resistant. Remains flexible in cold conditions. Non-corrosive metal buckles for adjustable fit.