One of my Fitbit Alta HR straps broke while on vacation. I bought an inexpensive set of replacement straps from Target, but I'm sensitive to cheap metals, and whatever straps were used for the clasp, I developed a rash on the underside of my wrist. Also, the straps were unnecessarily long and practically wrapped around my wrist. They fit great, the length is perfect (for me, I see that the "big" small ones don't fit them), and most importantly, I'm not allergic to them :) Also very happy with the quality.
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