I'll have to see how well they hold up over time but for now I only use them for running and not lifting weights I think that would be one real challenge. Good light material and I really like the length (there is a spoon), kind of elastic, overall I'm happy with it and plan to order a few more, but I can try to take XL, I have a big one now and it fits exactly (I have a 43 inch jacket size).
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