Increase your speed with it. The Crit sunglasses by Tifosi are designed for comfort, the glasses feature vented lenses and slip resistant ear and nose pieces for a custom fit. The durable nylon frame is lightweight and robust, while the lenses will protect you from harmful UVA and UVB rays. The Light Night lenses are colour-neutral for zero colour distortion, they use variabkle tint technology to adjust quickly to changing light conditions.