HMC + Photochromatic (Changable)

Photochromatic lenses are lenses that stay transparent indoors, but darken when exposed to ultraviolet light from the sun. Essentially, they provide the benefits of glasses and sunglasses in a single frame. A anti-reflective coating is applied to your lenses after they’ve been cut and shaped to prevent reflections from bouncing off of your lenses-both inside them, where they might interfere with your vision, and outside them.