Podiatrist turned shoe designer is the mind behind one of these brands. With her extensive knowledge on the subject, advised me on some key points to keep in mind when shopping. the straps are just long enough to fit over my shoulder when wear my but not so long that the touches the floor when it in my hand these are two bug pet peeves of mine. the size is perfect for all my essentials including a change of for the gym and on days when am not going to the gym it even fits my camera and flash...