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Hydrapak Ultraflask Speed 500

The Hydrapak Ultraflask Speed 500 is a super lightweight soft flask designed to be used with running packs and vests during missions on the trails and fells.

Part of Hydrapaks 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 included tube. Topped with a new feature, the SpeedFill™ cap, makes aid station refills a breeze. Ultra lightweight, ultra useful.


  • BPA & PVC free
  • Leakproof
  • Freezeable
  • 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


  • Capacity: 500ml
  • Weight: 41g
  • Dimensions: 186mm x 58 mm / 7.3 x 2.3 in
  • Material: TPU, PP/POM, Silicone

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