I bought this in Lucky Stripe to take while I walk my dog - fits my phone, keys, flashlight, tissues, even a 1/2 liter water bottle if it's unzipped, and more.  I also bring it to the gym in my apartment building, when all I need are keys, my iPod shuffle, a washcloth, and small hand weights to hold while I run.  It fits my wallet if necessary, and I have used it occasionally to run errands.  I also plan to use it as a purse within a beach bag and to walk on the beach when I don't want to leave my essentials in my bag unattended.  Very durable and bright fabric.  I like how it's adjustable to cross-body, shoulder, etc. and how the adjuster piece is metal, not plastic.  Perfect bag for my purposes!  Am considering buying more colors.