Bose ALTO LENSES BLUE ALTO Replacement Lenses Gradient Blue (Non-Polarized)

Featuring an intuitive design, these replacement lenses for the M/L Bose Frames Alto are easy to interchange on your own. They block up to 99% of UVA/UVB rays—with a polarised option available. And they’re forged from premium materials to ensure they won’t easily scratch or shatter.