Bobster Flux Photochromic Goggle features a low profile frame and anti-fog photochromic lenses, which darkens in the sunlight. The dual layer foam made out of neoprene and open cell foam create a durable, yet effective seal around the eyes to keep the wind and debris from affecting your vision. The photochromic lenses start out almost clear and go to a light smoked while in bright sunlight. Anti-fog has 100% UV protection. The Flux comes with a microfiber pouch for easy cleaning and transport.