ESS
ESS Crossbow Replacement Lens
This is a replacement lens, not a pair of glasses. You receive the lens only, to be mounted on a frame you already own.
Five Tints, the Widest Range
Clear - for night, indoors, or overcast conditions.
Smoke Grey - for bright daylight, neutral grey without color distortion.
Yellow - for flat light. A contrast-enhancing lens that hardly darkens.
Copper - warm tint, increased separation in greens and browns.
Bronze - the tint exclusively offered by this replacement lens in the range.
Two Declared Standards, Not One
This lens declares ANSI Z87.1-2020 and the U.S. military specification MIL-PRF-32432A.
This is the difference from the slightly less expensive Crosshair replacement lens, whose manufacturer's specification sheet only cites the ANSI standard - even though both are stated to be compatible with the same frames.
Three Possible Frames
Crossbow, Crosshair, and Suppressor. A lens purchased here is not locked to a single pair.
Manufacturing
High-strength, unbreakable 2.4 mm polycarbonate, extruded, cut, and then thermoformed. The surfaces receive a hard anti-scratch and anti-reflective coating.
ESS modular technology allows for tool-free changing: this is the whole point of buying a lens rather than a second complete pair.
Standards Declared by the Manufacturer
ANSI Z87.1-2020 and MIL-PRF-32432A, with 100% UVA and UVB filtration.