BOSE | Lenses Tempo Style Orange | 855582-0400-Interchangeable sport lenses make Bose Frames Tempo multi sport ready. Featuring an intuitive slide and lock design, you can swap lenses in seconds to match your current terrain and lighting conditions. Lenses block up to 99% of harmful UVA B rays and have an extended +3 mm length for added protection from wind and debris "with polarised options available.