Oakley SI Ballistic M Frame Alpha Replacement Lens Bolle Duo You also get a pair

You also get a pair of matching stem sleeves

and exceed ANSI Z87

Note: ESS Polarized Crossbow lenses meet ANSI Z87

High level of anti-fragmentation protection that can stop a shotgun blast from a distance of 10 meters

Oakley SI Ballistic M Frame Alpha Replacement Lens Bolle Duo You also get a pairThe Alpha lens was designed to maximize field of view and protection, without sacrifice to style and aesthetic. All replacement lenses meet MIL PRF 32432 Ballistic Impact Standard, and Optical Clarity of ANSI Z87. 1. Fits SI Ballistic M Frame Alpha. Does NOT fit any other M Frame models. Features: Fits SI M Frame Alpha and SI Halo High Definition Optics (HDO) for unbeatable clarity and performance Lens contours that extend peripheral vision and