Cruise the open waters in Sperry Top-Sider Billfish w/ ASV boat shoe. Mesh panels allow airflow throughout the leather upper, while the lining manages moisture within. The innovative Anti-Shock and Vibration (ASV) system with a Lateral Dispersion SystemTM deflects g-forces caused by rough waters and engine vibration to keep you steady on the boat. The Sperry Top-Sider Billfish w/ ASV carries you on a molded, cushioned footbed that conforms to your foot shape for a custom fit.