I bought this to replace the sleep band that came with my Fitbit One. I found this a little tight, but I much prefer this band. It is soft and I don't get scratched or lose the Fitbit overnight, as I had with the original band. The zipper is flexible and doesn't cause any discomfort. At first, I was concerned that the silent alarm wouldn't work, but the band doesn't interfere.Comfortable, useful, soft! I like it.
Rating: [5 of 5 Stars!]