
I am very happy with the extensions. They work as intended. I suggest buying silicone fastener rings to use with the strap, otherwise the end will stick out: https://smile.amazon.com/EverAct-trade-Silicon-Fasteners-Fitbit/dp/B01EKT34ZE/ref=sr_1_2?keywords =silicon+ clasp+ring +fitbit+flex&qid=1558630978&s=apparel&sr=8-2 Wearing a Fitbit on my ankle gives a better indication of my activity level than wearing it on my wrist.

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