I've been wearing Native Eyewear since 2006 when I was at the school of infantry at Geiger. Saw them at Extreme Outfitters. Someone shot them with a 12 gauge buckshot. Only put small dents in the lens. I have been wearing since I first saw that. They may not be rated for Mil use like Oakley But I had no problem wearing them in Iraq or Afghanistan. (I was using Hardtop XP until the Ultras came out) I have a big head. The ultras are much more comfortable for those of us with large grapes.