If you're looking (like myself) for a small bag to carry things like your wallet, cell phone etc. and don't want the 80's look of a fanny-pack this bag is a great solution on and off the bike.
I use it when I travel mostly off the bike but also going on day rides when I am not in full gear.
Looks great with the RS logo, very usable shoulder strap (removable) a few inside pockets to organize your things.
It's not very big just large enough for personal belongings (which I like), you will not fit awarer bottle init or an extra layer.