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Hydrapak Ultraflask Collapsible Water Bottle

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Water Bottles we have in stock.

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Details

Minimize water movement on your run.

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

Material
thermoplastic polyurethane, silicone, HDPE
Volume
300ml, 500ml, 600ml
Valve
high-flow bite valve
Dimensions
[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
lifetime

Tech Specs

What do you think about this product?

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>Rating:

Ultraflask Collapsible Water Bottle

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. Ultra light weight, ultra useful.

So
>Rating:

UltraFlask 500 ML

Part of theultra-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. Ultra light weight, ultra useful.

Part
>Rating:

UltraFlask

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UltraFlask

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UltraFlask

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Ultraflask Collapsible Water Bottle

The UltraFlask IT 500mL features our new IsoBound™ insulation technology that keeps water cold and won't sweat in warm temperatures. Engineered to keep fluids at an ideal temperature 38% longer than a standard reservoir. After all, cold water is more refreshing.

>Rating: 3

Not bad

Familiarity:I've used it several times

I put a pinhole leak into mine on day one, which is a bummer, but I love having a few of these around for different adventures.

>Rating: 2

Good Idea but...

Familiarity:I've used it once or twice and have initial impressions

I really liked the idea of packable water bottles for traveling. However, I am not sure I would use these because they are so flimsy once you start drinking and they are not full. Maybe that is the idea but I think I will still with my Hydro.

>Rating: 5

Bought a size too small

I love this product but I bought the wrong size for what I needed it for

>Rating: 3

Would rather have a mini camelbak

Familiarity:I've put it through the wringer

I like that this is pocket sized and the short (6") rubber hose nozzle that comes included. I can put the flask in an inner chest pocket, where it wont freeze on winter outings (e.g. backcountry skiing, climbing, etc), and the nozzle protrudes just far enough to reach my mouth when needed (if i unzip my jacket a bit to get at it). Two points for improvement: (1) the nozzle needs a way to be sealed (picture the nob used to seal a camel back hose). Otherwise it will drip if compressed (e.g. while stored inside a loaded pack). (2) the lid would be better in a side mount rather than top mount configuration to make it less bulky when stored in a pocket (again picture a camelbak, and think of how the lid is mounted for storage in a backpack inner pocket). Basically I just want a mini camelbak that I can store in a pocket on my jacket, but this is the closest you can get.

>Rating: 5

Great for travel

Familiarity:I've used it once or twice and have initial impressions

Fun squishy design. The bottle collapses down to almost nothing when empty. The lack of a rigid structure makes drinking a little awkward as you get closer to empty.

>Rating: 5

so Simple

use it in my running belt and it fits well and is a breeze to use, especially appreciated while on a grueling trail run!

>Rating: 5

Lightweight !

Familiarity:I've put it through the wringer

Awesome lightweight bottle that collapses down to save space in your pack. I also really like the small size to stick in my coat while skiing to grab a swig of water on the lift. After its empty and collapsed you will hardly notice it is in your coat!

>Rating: 4

Spare Flask

Familiarity:I've used it several times

Got this for other consumption than water. Great light weight little flask easy storage while backpacking.,

>Rating: 5

Say no more to heavy water bottles!

Familiarity:I've used it several times

Bought a few of the 600ml because they are great for long runs. No more being weighed down by heavy unused water bottles. Once you finished one of these just roll it up and pack it up.!