Viking Footwear Mariner Waterproof Slip-Resistant Boot 95% Rubber/5% Polyester SBR blended NR 16 boots with polyester lining. 100% Natural Rubber upper with polyester lining for extra comfort and durability Highly chemical resistant rubber upper Sperry soles for ultimate slip resistance on fiber glass. 3 lace rear bellows. Non marking soles Cut-off line to make boot shorter. Removable orthopedic designed insole Ideal for Boat crews, Leisure boaters, Deckhands, Dock workers