Rugged Shark Men's Marlin 2 Sneaker,White Navy, Leather Mesh Leather Proven on the Water: The Rugged Shark MARLIN series has been a staple for marine and boating wear for a decade. Built for PERFORMANCE: Utilizes Rugged Shark's patented Aquaire Drainage System. COMFORT Features include: a padded mesh collar for comfort, speed lacing system for an adjustable fit, and a removable, antimicrobial footbed. TECHNICAL CONSTRUCTION: a high impact, phylon midsole cushions every step, and slip resistant rubber outsoles help maintain footing.