Duduma Polarized Fashion Flip-up Sports Sunglasses for Running Cycling Fishing Golf Tr56 Unbreakable Frame Composite frame Composite lens polarized Flip up lens design allows access to unobstructed vision for use of scopes or work in darker areas. Sharp looking and practical. Polarized lens with UV A and B protection. Optical insert included, use if needed. Lightweight design is ideal for usage by motorcycle and cycling bicycle, driving, running, fishing, racing, Skiing and climbing, Trekking or other outdoor activities enthusiasts. Allows for easy and convenient to carry and install Lifetime Breakage Warranty on Frame & Lens 30 Day Money Back Guarantee