1-The size is according to the description.
2- the flasks do not move, stay in place so that is good. :)
3- clips are too small, need to be a little bigger, if you want to change your hydration vest in a race is so difficult, and you can try for about maybe 3 or 5 min until you can take it off. (I am going to replace the clip, it is so important in races to be fast changing clothes,…