Perfect for an afternoon spent beachcombing or voyaging out on the water, Costa’s Ballast sunglasses are ready for whatever the day brings. Frameless and almost weightless, these Polarized Costa men’s sunglasses boast a durable TR90 nylon and weigh in at a lightweight 16 grams. Whatever watersport or waterside adventure a day on the water brings, Costa’s Ballast are always looking to uncover something new.