Be prepared for anything with the Native Linville Sunglasses. The Rhyno-Tuff Air frames are extremely lightweight, yet durable enough to withstand high velocity collisions and extreme temperatures, making them perfect for any situation. 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 high-quality, impact-resistant lenses block 100% of the harmful UV light and eliminate glare for sharp, clear vision with increased contrast and depth perception. The Interchangeable Lens System allows you to transfer lenses in and out so that you always have the best lens for the conditions. Native's Venting System incorporates Exhaust Vents into the design framework in order to virtually eliminate fog and condensation, so you have clear vision, even in harsh environments.