1The goggles outer frame has ventilation system, keep air circulation and comfort when using. 2Lightweight, fit face well, suitable for most of people, can be used with night vision goggles. 3Strong toughness, not easy to break, protect your eyes during intense exercise. 4Multiple layers of coating, fashionable, windproof, sand-proof, available for all of weathers. 53 different colors for you to choose, meet your different needs.