I am 5'4" and not a big person...wanted a cross-over bag for travel to Europe where pick pockets abound.  This bag is just the right size for holding some extras inside it, but yet not huge to be cumbersome.  LOVE the side pockets for waterbottles--bought an 18 oounce one that I could use for refilling (it fits great) & the otherside I can put a hard glasses case in it.  This is great for easy access to my glasses when I need to switch.  Also has deep back slide pocket for easy access to a camera & the front flap has nice tight velcro with security straps inside.  Really don't think you can go wrong with this bag for any traveling one maybe doing...before Europe, it's going with me to Caribbean because nylon outter will be fine around beach area.