KANVAS introduces Kaenon’s custom-engineered internal cam-driven hinges that remove weight and hold the temples in the worn or folded position. The KANVAS frame embodies everything that you love about a Kaenon Polarized sunglass with simple, understated, if not conservative styling. Patented SR-91™ polarized lenses are housed in the wrapped, 8-base frame constructed from light-weight injection-molded TR-90 that also includes our Variflex™ buried nose pads for added comfort and anchoring stability when worn. Kanvas Also Features: All day comfort provided by thin, flexible temples on a geometry that provides a comfortable fit for various head shapes and sizes A compact and sleek design that makes Kanvas a "go anywhere" choice A midsize unisex frame that is a perfect fit for both men and women A micro-fiber cleaning bag and a soft sport case Patented by Kaenon, SR 91® is a high performance, durable, lightweight, and impact resistant lens material. This unique material offers razor sharp clarity, and with the addition of glare 860®, its polarized form, SR-91® boasts superior glare reduction. It is trusted by the world's top athletes and is good for extreme sports.