Wiley X PT-1 Matte Black Frame Safety Glasses712316030021 Wiley X brings you more than just an ordinary pair of shades when you follow the example of the US and Norwegian militaries and opt for the PT 1 Tactical Changeable Sunglasses. The model PT 1 features a wrap back style to improve and protect your peripheral view, and they also offer maximum protection by meeting ANSI Z87. 1 2003 standards for high velocity, are MIL PRF 31013 VO approved for ballistic impact, and are also APEL approved.