I'm pleased with these lenses for my Half Jackets. They are no where near the quality of the genuine Oakley lenses, but you get what you pay for. They are significantly thinner and flex a lot more than the oakley ones, so I do not believe them to be as safe when used as safety glasses to protect from large impacts, but they work great for things like dust and metal grinding. The optical quality of the lenses in my opinion is on par with the oakley branded ones. Polarization is extremely powerful and removes 95% of glare off windshields and while on the river. They went in my frames just like the factory ones, but do not stiffen the frames torsional resistance as much, as they are thinner and more flexy than the Oakley ones. Once I got over them being so thin and flimsy, I really like them and am glad I didn't pay twice as much for the Oakley ones.