The Revenge Series is a break through in hydration belt design and function. One handed entry and exit has never been easier with our unique and cleverly designed molded holsters. With just one hand, our bottles go in fast and come out faster. The great news is that these holsters will work with all past and present FuelBelt bottles. The R30 is our new one size fits all belt that carries 3 7oz bottles. With 21oz fluid ounces now at your disposal, it is perfect step up if youre finding yourself need a little more hydration than 2 bottle belts. One size fits all.