This is probably my tenth pair of MJ Banyans in ten years. They look great, are light but strong, and block out the sun in my peripheral without having to put up with a solid frame. But I do abuse sunglasses. I use them for all sorts of outside activities. They take sweat and a lot of heavy abuse in stride…though I probably have stepped on/crushed at least three pairs. Once in a while I’d have a weakened arm or some other concern and MJ has always made good on them (even if I’m the one who likely induced the failure).