Nrc eyewear s111 multi lens sunglasseswith a lightweight nylon frame that wraps around your face and adjustable pads at your nose and temples you will find the perfect fit with the s111 sunglasses from nrc eyewear interchangeable lenses also mean that you are covered for a wide variety of lighting conditions the lens is made of a tough yet exceptionally clear polycarbonate it is then treated with a coating that gives it excellent anti scratch properties features nylon tr90 material ultra l