 A lot of us wish we'd get around in two and a half, three hours, maybe on some days. But, you know, on Sunday morning, it could be a five-hour round. And that's where the nylon comes into play as well. You know, if you have a warm polarized sunglasses for 10, 12 hours and get a headache, you know, it's because they're not as optically pure as a glass or nylon. So these are things, you wear this for 12 hours, there's going to be no headaches.