Built on the counter current line of performance and style, the Eddyline protects your eyes and keeps your active lifestyle fashionable. Using innovative technology with functional style, Native Eyewear crafted a pair of sunglasses that stay comfortably snug during all your outdoor activities. By using biodegradable resin agriculturally derived from castor beans, Native sunglasses offer environmentally friendly construction that is resilient and durable. Resin from castor beans has a higher strength to weight ratio compared to synthetic materials while being lightweight.Native Eyewears use of sustainable, earth-friendly materials brings you back to the purity of nature while intuitive features keep your eyes protected from the elements. Key Features Interchangeable lens technology to accommodate varying light conditions N3 polarized lenses for excellent protection against damaging UV rays Co-Injected Rhyno-Tuff Air frames offer lightweight yet sturdy construction Cushinol offers non-slip grip in all the right places Made of sustainable, eco-friendly materials Optic gear kit includes a hardcase and a soft case that doubles as a cleaning cloth Mastoid Temple Grip hugs behind ear Cam-action hinges quickly lock in place Large fit frames are comfortable and best for large profiles All Native sunglasses are backed by lifetime warranty Interchangeable Lens Design The Eddyline sunglasses come with Natives interchangeable lens technology. You can buy additional lens kits that suit your needs and quickly change the lenses with ease. N3 Polarized Lens Technology N3 polarized lenses block up to 4x more infrared light than regular polarized lenses. As Natives most innovative and advanced polarized lens, the N3 provides UV protection up to 400nm and significantly reduce blue light while selectively filtering UV light. The result is high-contrast and optimal visual definition while protecting your eyes from the effects of long-term sun exposure. All Native lenses are impact-resistant and built with poly-crystal carbonate ensuring superior protection in the event of a crash.