Comfortable and lightweight safety spectacles with flex flat temples. Flexible design offers an adaptable fit, staying secure even on narrow face shapes, and provides high grip without exerting pressure. Designed with 60% blue blocker lens and brown frames. Polycarbonate Construction Anti-Scratch Grade F Impact Lens Optical Class: 1 99.9% UV Protection Anti-Fog Low Energy Impact Not Adjustable Lightweight 19g Polycarbonate Construction Anti-Scratch Grade F Impact Lens Optical Class: 1 99.9% UV Protection Anti-Fog Low Energy Impact Not Adjustable Lightweight 19g