Got these for my 10 year old son who has lost his Fitbit Ace more times than I care to count! It comes with an elastic strap that works great. However, his rubber makes his wrist sweaty and irritated when he plays outside, so he often took it out of his bracelet and just put it in his pocket. He later realized it wasn't there (usually on the couch) because it fell out of his pocket. Now he just holds it like that, strapped to his belt the whole time. It always stays in place no matter what they do and we don't have to worry about losing it next time. My wife loves it too because it fits her too so 3 packs gives them multiple color options.
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