Do Half Blade offers improved lower and peripheral vision due to the frameless bottom part, which improves safety in traffic and allows you to keep track of other riders in the peloton. Several lens tints are optimized for road bike, increasing contrasts on the road surface, helping you to spot irregularities, holes and gravel in time. The anti-fog and ripel treatments help keeping fog, dirt and grime off your lenses and makes water pearl off.