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HydrapakUltraflask Collapsible Water Bottle

HydrapakUltraflask Collapsible Water Bottle

$18.95 - $20.95

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4 out of 5 stars
9 Reviews

Ultraflask Collapsible Water Bottle

Your marathon is just three weeks away and you're hitting the peak of your training. So before you hit the pavement for that long run, grab the HydraPak Ultraflask Collapsible Water Bottle. Unlike traditional water bottles that remain bulky even when the water's gone, the Ultraflask shrinks as you drink to minimize sloshing and bulk. It comes with both a bite-valve cap and straw to fit your hydration preferences.


  • Soft water bottle for hikes, runs, and bike rides
  • Material is soft and flexible to shrink as you drink
  • Conforms to your hand or any pocket easy carrying
  • High-flow bite valve seals after every sip to stop drips
  • Includes removable drink tube for added convenience
  • Item #HPK0019

Tech Specs

thermoplastic polyurethane, silicone, HDPE
300ml, 500ml, 600ml
high-flow bite valve
[300ml] 3.3x2.7in, [600ml] 6.5x2.7in
Claimed Weight
[300ml] 1.1oz, [600ml] 6.5x2.7in
Recommended Use
backpacking, casual, hiking, trail running, triathlon
Manufacturer Warranty

Overall Rating

4 based on 9 ratings

Review Summary

5 Stars - 5 reviews
4 Stars - 1 reviews
3 Stars - 2 reviews
2 Stars - 1 reviews
1 Stars - 0 reviews

Fits Small

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Runs smallTrue to sizeRuns large

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