the blue and black fanny packs are made of higher quality material than the rest of them, I have the blue one and I'm going to get the black one now. The other colors are made of a cheap nylon material, while the other two are made out of this thick fabric. I love it especially because it has a little hidden pocket in the back where you can fit a phone or wallet (how many times have my phones been stolen at raves?) It's a little small for me but then again I'm carrying cigarettes, gum, blowpops, vicks, a wallet, glasses, and a phone so unless you're stuffing it like me it should be plenty big enough. The wrist strap was a bit big for me too but this was easily solved with a safety pin.