Fit & Design: Non-reflective lenses reduces glare to prevent squinting Distinguished double nose bridge feature, is snug and light-weight, with a comfortable fit to prevent bouncing while running or crushing any workout Glare-reducing, polarized black lenses and UV400 protection that blocks 100% of those harmful UVA and UVB rays Special grip-coated frame with silicone inserts to eliminate slippage when sweating Additional Details: PHG Collection