The boatyard by xtratuf is a 100-percent waterproof collection of leather work boots that provides traction comfort and protection. This men s 6-inch lace-up boot has a rubber vamp with a saltwater-resisting full-grain leather upper that develops a patina over time. Inside the boots have a breathable waterproof membrane and a molded eva insole. These lightweight boots have same xtratuf non-marking slip-resisting chevron outsole as their rubber counterparts.