Embrace the sunlight with the Native Eyewear Chilkat Sunglasses. The Rhyno-Tuff Air frames are extremely lightweight, yet durable enough to withstand high velocity collisions and extreme temperatures, making them perfect for all your outdoor endeavors. Mastoid Temple Grips provide a comfortable and snug fit, while keeping the sunglasses securely on your head. The Cam-Action hinges help the temples lock into place quickly, for easy on/off access. N3 polarized lenses pass Z87.1 testing and feature up to 40% IR reduction, UV protection up to 400nm, and state-of-the-art blue light filtering. These optical-quality, impact-resistant lenses block 100% of the harmful UV light and eliminate glare for sharp, clear vision with increased contrast and depth perception. Whether you're on the beach, the boat, or the sidewalk, this is one pair of sunglasses you will want on your head.