Part of our ultra-light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, it’s optimal hydration, no matter what kind of runner you are. Its pliable material conforms to most pockets, it shrinks as you drink to minimize water movement and it can be used with or without the tube.Topped witha new feature, theSpeedFill cap, makes aid station refills a breeze.Ultra light weight, ultra useful.

• COMFORTABLE FIT

  Soft material conforms to most hydration vests, belts, or pack pockets

• COMPRESSIBLE

  Flexible design shrinks as you drink reducing water movement

• CUSTOMIZABLE HYDRATION

  Choose between a bite valve and a drink tube cap

• SPEEDFILL CAP

  Topped with a flip top cap for fast refills at aid stations