Apple Watch 9 45mm, fits just fine.Many years with Apple Watches now, many different bands tried…. Sport loops are my favorite for everyday, comfortably weightless, never slick with sweat, rinse & dry quickly, don’t irritate or slide on my skin. My problem is most are too long for me and overwrap. I’m very glad these elastic+ adjustable sport bands are easier to find now (such a worthy design idea),- I bought these to try them out, because I perused the choices, read the reviews and liked these colors & price point.After several months of daily wear now, I think these bands+ are as comfortable as previous loops but fit my wrist better which looks nicer to me = goodbye overlong loop,+ still look new, are still nicely elastic, and like my preferred watch bands, it’s so weightless and no bother that I forget I’m wearing it.+ I adjust these before wearing, and hold the doubled layer between two fingers as I pull it on so my adjustment doesn’t slip.Doesn’t slip afterwards either, as I wear it thru the day = very good ✅+ Happy with purchase, would buy again & easily recommend.