Don't Waist your time thinking, just buy it!
After 5 years with a FlipBelt, I am really pleased upgrading my FlipBelt to this Nathan Zipster Lite belt. The biggest feature upgrade is the zipper pockets that can fit your phone. I have previously ran with a FlipBelt but the lack of zippers meant I have had too many instances of adjusting the phone position (and it has also fallen out, too), so having that extra confidence knowing the phone is secure is reassuring to focus on pace vs your phone falling out. What's more is that there are TWO zippered pockets, located equidistant apart along the circumference of the belt to ensure an even weight distribution for a more biomechanically-balanced running experience. The side pockets (non-zippered) between the zipper pockets is perfect for holding all your gels for that tough marathon. Ingenious product design, sitting at your fingertips ... errr... waist.