Costa Del Mar Double Haul Sunglasses are great sunglasses aimed at anglers. This style of sunglasses features a venting system that is designed to reduce fogging issues, but ditches the full frame underside Hydrolite non-slip coating found on other models in favor of a more traditional nose pad and temple coating design.
Costa's venting system is simple, but a feature not found on other competing glasses. Comprised essentially of 3 holes drilled into the frames on either side of the glasses, Costa's venting system may look like a minor addition, but Costa claims it provides big gains in reducing fogging and condensation on the eye-facing side of their lenses in conditions where anglers typically struggle with these issues.
