Our sport scrunchies are NOT just any hair tie. We made these specifically for performance; a soft scrunchie means no tight spots, tangling, or breakage (like with a typical elastic hair tie), but a slim volume profile means they're easy to get tight enough to hold without any extra fabric getting in the way. They're also cut from sportswear wicking fabric that can handle completely any workout you throw at them, and look great while doing it! They dry super quick, meaning sweat and rain won't weigh you down, and they wash up fantastic. They might just be the best scrunchie you'd ever owned!