Costa Del Mar Blackfin Pro Polarized Sunglasses Color:Matte Black/Green It has an open top

It has an open top for a faster draw

Solid polyethylene ball and PVC seal mounts on transom above water line

Built for anglers who demand strength

salt-resistant A-RB bearings

Combination set

Costa Del Mar Blackfin Pro Polarized Sunglasses Color:Matte Black/Green It has an open topAn enhanced version of one of Costas most trusted and well loved frames, the Blackfin PRO builds off the original look, polarized lens and fit with six new angler approved additions to keep you on the water longer. Along with a vented and fully adjustable nose pad for a custom fit, sweat channels and eyewire drains will help keep your vision clear, while side shields, hooding, new stickier Hydrolite and metal keeper slots keep your frames and your