Costa Fly Line SunglassesFly Line is made for watermen looking for a tool with proven performance features, wrapped in a modernized design. Taking overall fit inspiration from our best selling performance frame, Reefton, Fly Line features an 8 base wrap that provides coverage and protection from the elements. Double injected hydrolite on the nose and temple tip aids in comfort & retention, allowing you to better focus on the task at hand. Retainer ready temple tips allow