For the black strap there is only one option - small. And by small I mean it's really handy when you use the very last hole. The end of the tape will fold under the tape at the end causing chafing and itching. I can't tell you how many times it's been undone while I was sleeping or just doing something. I'm sure it's a decent bracelet for small wrists, but I'll order something else and not return as the price was pretty cheap.
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