Costa Del Mar Fantail PRO 580G Glass Polarized Sunglasses are ready for action. The PRO version takes the Fantail and gives it some serious upgrades for hard-core fishermen. Costa's PRO Series fit and features include: sweat management channels and eyewire drains, improved Hydrolite rubber, fully adjustable nose pads, top hooding and side shields, and metal keeper slots. Polarized and outfitted with mirror coatings to help control glare, Fantail PRO sunglasses boast 580G LightWAVE glass lenses—the clearest in the industry. 580 technology filters out harsh yellow and harmful blue light, making colors brighter and clearer. These fishing sunglasses sport durable co-injected nylon frames made using an eco-friendly bio-resin process (using castor oil instead of petroleum) to reduce emissions. Costa Fantail sunglasses sport Hydrolite™ nose pads and temple tip inserts for a more secure, comfortable fit. They also include a case, a cleaning cloth, and a mfrs. limited 2-year warranty.Manufacturer style #: 580G. Fantail sunglasses with PRO series upgrades LightWAVE glass lenses for superior clarity and scratch resistance Polarized lenses are outfitted with a mirror coating (on select styles) to kill glare True 580 Technology blocks yellow and blue light while boosting red and green light Tough, eco-friendly nylon frames with Hydrolite nose pads and temples PRO upgrades: sweat channels, eyewire drains, improved Hydrolite, adjustable nose pads, top hooding, side shields, and keeper slots