The Epoch Foam is a foam-backed performance frame. An essential piece of equipment for any motorsport enthusiast! Protect your eyes, block the sun and look great in this classic frame! The lenses shatterproof polycarbonate. These Epoch Foam Glasses have lenses that transition from Clear to Dark Smoke offering you a pair of riding glasses good for all lighting situations. Photochromic sunglasses are clear in low light conditions but turn dark in bright sunlight. Smoke lenses are best for maintaining the true colors of what youre looking at. They block the most amount of light, which will help to reduce eyestrain if youll be outside for an extended period of time. Epoch Eyewear is a Veteran owned and operated company. We are proud to be a part of the Veteran community and build a company that provides jobs and great products.