Bose Lenses Alto style S/M Gradient Blue (Non-polarised) for S/M Frames

Featuring an intuitive design, these replacement lenses for the M/L Bose Frames Alto are easy to interchange all on your own. They block up to 99% of UVA/UVB rays - with a polarize option available. And theyre forged from premium materials to ensure they wont easily scratch or shatter. - Bose Lenses Alto style M/L