NAVYBLUE x Transitions® features an adaptive technology lens consisting of billions of photochromic molecules. This makes it possible for them to quickly darken when the sun rays shine on them, providing 100% UV and UVB protection. Indoors and at night they become completely clear, blocking 20%-85% of the harmful blue light. Transitions® experience and patented technology ensures that the amount of light your eyes receive is optimal, whether it is a sunny, cloudy day or indoors.