Hydrapak Ultraflask Speed 500ml

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 with a new feature, the SpeedFill 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