The sunglasses are equipped with a vented and fully adjustable nose pad

Featuring innovative horizontal Delta Cores technology

and manufacturing crew from Portland

Replacement strap kit is suitable for all Darche RTT's and most other makes

Costa Blackfin Pro Polorised Glass Sunglasses Colour:Matte Grey Frame / Blue Mirror The sunglasses are equipped withCosta Blackfin Pro Polorised Glass Sunglasses for Serious Anglers Dominate the dawn patrol and chase those elusive sunset bites with the Costa Blackfin Pro Polorised Glass Sunglasses. Engineered for the discerning Australian angler, these shades deliver unparalleled clarity and protection to keep you focused on what matters most the catch. Crystal Clear Vision for Extended Sessions on the Water Building on the legendary fit of the iconic Blackfin, the