Box-735 Sports Edge Twist-Ex / Shatterproof Night Vision Protective Glasses / Goggles & Box - Yellow Lens Sports spectacles commonly known as PC bullet-proof lenses, light weight, and not easy to break, can prevent over 95% of harmful ultraviolet radiation Yellow lenses increase image contrast in low light / misty / dusk environments Sport sunglasses assists to keep wind, mud and debris out of your eyes, and is perfect for outdoors bicycling, mountain-climbing, running and skating UVA/UVB protection / UV400 glasses Virtually indestructible frame and lens!