I worked at Oakley when it was acquired by Lux.
Oakley puts an INSANE amount of R&D into their products, particularly their eyewear. They have laser stations to make sure the optics of the lens doesnt change the perspective of things (the difference between catching a baseball in the glove and in the mouth), "shotgun" tests, weighted spikes, and even have a machine that opens/closes the sunglasses several million times. They test each design and material very thoroughly. Or, at least, they did when I worked there.
If the design didn't survive all of the tolerance parameters, back to the drawing board.
We also subjected our competitors glasses to the same tests. You wouldn't believe how many name brands just fell apart, or blew up into shards of plastic into our dummies' eyes, etc.
When Lux bought us, they made us take down the videos of exploding ray-bans we had on our website (And some other brands). Then they ran our entire department into the ground. Real piece of shit company. Those of us who didn't leave between 08-12 got laid off in ~16 or so.