Native Eyewear Wells Polarized Sunglasses - Brown Crystal/Brown - Understanding the need to be spontaneous is not to be overlooked. With this in mind, Wells is designed with a square-shaped lens, streamlined temples and a face-hugging fit that won't let go, even during the most unplanned of situations. Constructed of a bio-based resin and finished with precision-cut metallic foil logo detailing, this frame only leaves to the imagination what adventure to embark on next. ​Premium Polarized Lenses: Native lenses protect against UV rays, defending your vision against long-term sun exposure. Bio-based Frames: The Bio-based plant resin is a high-performance material which is both extremely lightweight, yet durable enough to resist temperature extremes. Hypoallergenic Cushinol: Nonslip grip to keep your sunglasses in place while you are getting after it. Easy to Clean: Resists water, dust, dirt, oil and fingerprints while preserving the appearance of the lens against wear and tear.