As an avid runner who doesn't like having her phone strapped to her bicep, this has proven to be invaluable. Keys, identification, cash, phone, headphones...this pouch carries them, and keeps everything secure. It holds the items in a way that doesn't make the pouch bulge and look bulky while wearing it. Most of the time, nobody even knows I'm wearing it unless I raise my shirt to get something out of it. I use it in the gym as well. I highly recommend this especially for runners.