At ESS, superior function comes standard. The ESS CrosshairTM exceeds ANSI Z87.1 optical standards and U.S. Military impact requirements while providing all-day comfort and a universal fit. This entry-level eyeshield goes well beyond the basic necessities of performance eye protection: with a baseline of advanced technology and superb adaptability, the CrosshairTM benefits from complete compatibility with the ESS Cross-SeriesTM eyeshield platform..