As you can see by the the green measuring in my pictures, this is NOT big enough for a phone. It's only for cards, dollar bills, and keys. It does have a bit of a stretch, but not much. If you stuff it too much with junk, it will have a bulky look, or an obvious appearance that it's no ordinary wristband. This is something I'd just use like in the spare of the moment, or if you have to jump out the door immediately.One thing that does bother me is that the zipper has the tendency to get stuck within the material. I can zip it close with no problem. But zipping it up sometimes requires a little effort.Other than that, it's fine.**UPDATE**This thing is VERY easy to lose. Please be careful where you placed it. I scared myself to near mental illness trying to find this thing that had my credit card and ID in it. Also, if your key has a big head depending on some brands of the car, it won't fit.
Rating: [4 of 5 Stars!]