The Xtratuf 12" IN Insulated Elite Mid Legacy Boot is designed to provide the protection and durability of a Legacy boot but with an unmatched comfort for long days at sea or long hours on the dock. Using RDR Rubber, an oil/chemical resistant compound, this boot is resistant to many organic and inorganic acids, oils, chemicals, and contaminants. The Elite boot is built with a 4-way stretch mesh covered 5mm neoprene bootie, this allows the boot to be comfort rated to -20F. Recommend half sizes order up Please note this product is sized for men. Women should size 1.5 to 2 sizes down Breathable airmesh lining 100% Waterproof 4-way stretch meshA high abrasion nylon for added durability Slip-resistant non-marking chevron outsole Reinforced rubber layers for durability 5mm neoprene bootie adds warmth and comfort Recommended temperature rating to -20AdegF