Bought this to replace the Fitbit One sleep wristband, which IMHO is a piece of junk. The GOGO Band is cooler and stays in place all night long. The Fitbit band was hard to fasten so it wasn't too tight or too loose, and it often came unfastened in the night. And it was HOT! I often woke up with sweat under it. The Velcro hook part was longer than the loop part so it was scratchy. The zipper pouch on the GOGO Band is secure with no chance of Fitbit coming out. There is no mesh window, but who cares; I'm supposed to be sleeping. In fact, I am sleeping better because I'm not hot or searching for my unfastened Fitbit band.I would have given the GOGO Band five stars if the zipper laid flat inside the band. Not a huge issue, just a little puckered. It doesn't affect the comfort or usefulness of the GOGO Band, and I would still buy it for this purpose.
Rating: [4 of 5 Stars!]