Costa Del Mar Tuna Alley Pro Sunglasses Lens Color:Sunrise Silver Mirror Mammut is committed to replacing

Mammut is committed to replacing non-biodegradable fabric treatments with more sustainable high-performance alternatives

Year-round insulation layer that is lightweight and breathable

Improved fabric with self-fabric binding tape

Powered by patented 8th generation bone conduction

Extended hipbelt and shoulder straps

Costa Del Mar Tuna Alley Pro Sunglasses Lens Color:Sunrise Silver Mirror Mammut is committed to replacingAs recognizable as the sandy shelves between islands in the Bahamas that Giant Bluefin run through each spring, Costa's Tuna Alley frame now comes with an updated style and PRO Series upgrades. This legacy frames updated vent system is backed up by six fish spotting features to help you do it like the pros: Sweat management channels and eyewire drains, improved Hydrolite rubber, adjustable nose pads, top hooding and side shields, and metal keeper