I ordered a small size jump strap for my 8 year old girl for her Garmin vivofit jr. She is only eight years old and attaches the strap to the penultimate hole of the strap. So if your child is a bit taller, I would recommend buying a larger size. She loves it and said it's a lot more comfortable than her original band. I only received it four days ago, so I can't say how it will hold up. But it looks well made and suits her very cute. I can recommend and I would buy it again. I have just ordered another set with the same imprint in case this dose breaks or gets damaged. It is so sweet!
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