I have been using these metal bands on my Fitbit Alta for several years. They are much more comfortable than other bracelets because you can easily and quickly adjust them on any part of your wrist. But they stay safe. I bought two straps from this seller, one in space gray and the other in blue. I'll probably go back and buy multicolored or purple. is considered a "big" wrist for a woman. So make sure you check the picture in the size chart to choose small or large. Sometimes the edge of the strap catches on the fabric/material, but the frequency with which this happens is pretty low. This can be annoying for some, but overall I'm very happy with the design of this product.
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