These Goodr sunglasses come with large, dual lenses which come with a polarised lens technology which is glare reducing and provides a more restful vision experience. The lenses come with a layer of UV400 which blocks out 100% of harmful UVA and UVB rays. The snug and lightweight frame construction keeps the glasses in position with a special grip coating that eliminates slippage - even when you&&';;re sweating. No Slip: special grip coating to help eliminate slippage when sweating. No Bounce: the frame is snug and light-weight, with a comfortable fit to prevent bouncing while running. All Polarized: glare-reducing, polarized lenses and UV400 protection that blocks 100% of those harmful UVA and UVB rays.