One-piece cover, good quality PC material, excellent transparency, anti-fog, anti-impactScratch resistant eyepiece design (Gap)Patented buckle design, easy and quick replacementSpeech Diaphragm design to keep communicate easyFive-point headband to keep stableDurable, and easy to use solution in a variety of environments and applicationsCE Schedule. GB2626–2019 LA ANSI.Z87 approval