Costa Blackfin Pro Sunglasses Tyingtools Uses 1 AAA battery (included)

Uses 1 AAA battery (included)

but with a few key differences

while the harder fluorocarbon core provides exceptional tensile strength

0’/30

Costa Blackfin Pro Sunglasses Tyingtools Uses 1 AAA battery (included)An 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