Sparkie Photochromic ticks all the boxes: Shatterproof anti-fog lenses, wraparound side-protection, and tough TR-90 frame - all with a Limited Lifetime Warranty. Light-to-dark lenses: These photochromic safety glasses offer protection day and night. The lenses appear clear indoors or in low light levels, then automatically darken when exposed to UV, ensuring you always have the right coloured lens for any light conditions.
