Genuine full-grain leather means extra strength and instant comfort. Rugged pigskin upper. Permanent direct-attach molding seals out water. Patented, long-lasting Dri-lexÂ® lining wicks away sweat and keeps skin dry and comfortable. Removable double density footbed adds cushioning and stability. Tough, lightweight polyurethane midsole. Fiberglass shank stabilizes foot, weighs 75% less than steel and reduces fatigue.