The Wiley X SG-1. Cut eyewear may look everything military. But before you take your eyes off it, you may want to know that it actually works in sports and in other adventurous endeavors, too. This Wiley X SG-1. Cut Interchangeable Lens Series w/ Smoke Green and Clear Lenses offers awesome features that you wouldn’t want to miss out on trying. It uses Ultra Foam which is much more durable than traditional goggle foam and more comfortable than the standard rubber rim. It provides. better SEAL and is also the only foam that can be customized based on environment. The streamlined design fits under all issued helmets. It includes two interchangeable lenses that provide day and night relief. Each SG-1 V-Cut lens is layered with anti-fog, and scratch resistant coatings to give you the perfect optical clarity and longer functional life. The slots are also manufactured into the outside edges of each lens, offering top to bottom circulation needed for intense operations. The temples are also included so the goggle can be converted into. set of ballistic sunglasses for down time. This Wiley X SG-1. Cut Interchangeable eyewear meets the military's Vo Ballistic Test. MIL-V-43511C, the rigorous 0.22 caliber ballistic impact test so your eyes are SEALed in a safe environment.