Rocky Creek Bi-Focal Motorcycle Riding Glasses Yellow 1.5When it comes to motorcycling your vision is critical. As we get older most of us experience some deterioration in our eyesight. These glasses are a great solution for those of you who can see clearly out front, but struggle to read your instrument panel, speedo or GPS. Given the proliferation of ever fluctuating speed zones, this is a pain. Basically they are riding glasses with bifocal lenses. The bifocals are available in +1. 5, +2. 0 and +2. 5.