Developed for paddling, the Perma Grin features a snug fit, and an aggressive temple curve and built in ear ports for improvised retainer cords-reducing the chance of 'dropping them in the drink'. The 8 base lens shape gets larger towards the temple frames, allowing maximum protection for the eyes from windy conditions and glare typical on the sea. Constructed with 8 base shatterproof and impact-resistant Polycarbonate lenses, with no fixing screws or metal components to rust in salt water. 100% UVA, UVB, and UVC protection.
"I can vouch for the "active hinges." On one backcountry kayak trip I stepped on my sunglasses and the arm broke off. After a moment of despair I tried popping them back into place and had absolutely no trouble. They are light, comfortable, and afford great protection......"