waist pack

noun

1. fanny pack.

Example Sentences

We scrunch it up into the compartment of a hydration waist pack, but it’s so small that you could even ball it up and tuck it beneath a base layer—Tour de France style—if you’re starved for pockets.

From Outside Online

The first is the waist pack, which belts around the waist and has slots for one or more water bottles.

From Popular-Science