Classic style inspired by sport vibes. Made with full-grain leather and perforated side panels, the Billfish 3-Eye Boat Shoe gives you the comfort and support of a sneaker with the stylings of a boat shoe.. Full-grain leather upper. . 360° Lacing System technology for a customized fit. . Full-length cushioning for all-day comfort. . Non-marking rubber outsole with signature molded Wave-Siping technology for enhanced traction.