Sperry Bluefish Shoes. The bluefish features genuine hand-sewn construction and padded tongue for durability and comfort! The bluefish boat shoe is made of stain and water resistant leather. The shoes have nylon mesh quarter panels for breathability and coolness. This shoe offers a molded EVA cushion mid-sole for all-day comfort! Another feature is the non-skid, molded rubber outsole with water channeling grooves for added grip on wet surfaces. This shoe is perfect with any outfit!