Some of the best cyclists in the world often battle uncomfortable sunlight and weather conditions throughout the day. Bell and Transitions Optical, maker of industry-leading photochromic technology, have teamed up to offer cyclists a new Bell Star Pro helmet shield that automatically adjusts to outdoor light. Transitions adaptive technology allows clear cycling shields to darken in bright sunlight, for increased contrast and improved distance and depth perception. The Bell Transitions cycling shield has a light tint in overcast weather or when the sun is positioned low. As sunlight intensifies, the tint conveniently darkens to provide comfort from distracting glare and protection from harmful UV rays. When the sun goes down, the shield tint will gradually return to clear, giving you an all-day visual advantage in one convenient shield.