Shimano Technium L Spare Lens Description: The Shimano Technium L Spare Lens is designed for aggressive on- and off-road cycling where light conditions constantly change. The Photochromic Lens stays light grey in low-light situations and turns dark grey in full sun, maintaining natural colors in sunny and cloudy weather. Features: Replacement Lens for Shimano Technium L half frame sunglasses Photochromic lens changes tint to block out bright sun or clear up in overcast conditions Specifications: Model: Technium L Color: Grey