WILEY X WAVE Sunglasses with Removable Facial Cavity SealThe Wiley X WX WAVE features thin half rubber temples and a sleek medium profile that is perfect for most standard head sizes. The Wiley X removable Facial Cavity Seal prevents harmful dust, dirt and wind from getting into your eyes. Feel like going out on the town? Pop off the removable Facial Cavity Seal and these sunglasses fit just as well. The WX WAVE meets the ANSI Z87. 1 safety standards for high velocity high mass impacts and optical clarity.