Costa Mainsail Polarized Sunglasses Knife A nod to our past

A nod to our past with eyes on the future our 40th Anniversary Collection takes design cues from the original Shark Watch that started it all in 1981

Sights: Blade and Ramp Front/ Adjustable Rear

40/105 10 8+1 6

40/380 80/660

Keep the optics of your riflescope safe with the robust Defender Flip Cap Objective 40 from Vortex

Costa Mainsail Polarized Sunglasses Knife A nod to our pastFor the performance and style you need on and off the water, our Mainsail frames are your go to pair for every outing and adventure. Built with the same high quality materials and features you want everywhere from the beach to the big blue, Mainsail frames help keep excess light out with micro side shields and hooding, your frames in place with improved Hydrolite grips on the temples and help keep sweat and water out of your eyes with eyewire drains