I'm not sure what this is called :(
It fits round the waist & you have 3 small bottles that you fill with water or juice. It is meant to have 4 bottles but I can only find the 3! One of the bottles has a slight orange staining from the energy drink that was in it. There is also a zip pocket to put your mobile phone in (as long as its not a brick) ;O) or loose change etc.