Stay Hydrated On The Go With The Hydrapak UltraFlask Collapsible Water Bottle For Hydration Pack Review

This is my third attempt with this product and I do not recommend these for anyone intending to use the straw caps. The first round of flasks got holes after a few months of light use. The second and third purchases are useless because the straw caps leak (the bite valve caps did not). Very disappointed since this brand is supposed to be high quality. Don’t waste your time.

Lightweight and no weird flavor. I like that you can roll it up. The video in the ad shows a hand strap, but this was not included. If not for that, I would have given this more stars.

I use this bottle with my Salomon 1L running vest. As soft flasks go, it is okay. I prefer the types of flasks which have a larger opening, as it makes it easier to clean, but the wide mouth really doesn't serve the kind of purpose to which it is typically put.The most significant issue is that it is very difficult to close - to secure the lid you have to apply significant twisting force to it and the bottle,, but the only surface you have to grab onto on the flask is the collar right under…

First off, I love these soft flasks. The problem is the bite valve. I use with my salomon pulse belt and storing invariably means some water leakage. The same if I want to pack them away. If the bite valves are clear and won't be pressed against, then they are fine; however, storing them into compartments/pockets like on the salomon pulse belt, ends up with some leaking.

This has a nice opening for ice and for easy cleaning. It is very lightweight and moldable to fit into different size pockets. When you drink it does not fill with air so you get water immediately when you bite the end. The end does not need to be opened or closed, just bite down, and it does not leak when you bend over to tie a shoe.

Great hydration system. Easy to fill and drink on the move. Collapse as they drain. Easy to dry afterwards. That's my review!

I only do longer runs occasionally. The 2nd use it started leaking out of small pin hole. I REGRET BUYING! That's my review.

Worked as expected initially but got a hole in the flask itself after just a couple uses (very gentle - sitting in a hydration pack pocket).

I bought these to use in my Orange Mud Endurance Pack 2L. They are so much better than a hard plastic bottle! I prefer the short bite valves.

Idea is great because it fits perfectly in my pack but it leaks out all the water if it gets flipped upside down. A mess if I decide to take off my pack.Waste of money

I wanted to find easy to use, collapsible bottles that I could put in side pockets for long distance (marathon) running. These worked perfectly for me.I ran a marathon with them - they didn't have a horrid taste (I did wash a couple of times before using), I could fit in my side pockets (running tights), I could take out and put back into my pockets whilst running, I could easily fill at a water station and simply squeezing the top when drinking meant I could suck water regardless of how full…

These make all of my bottles so much easier to refill at aid stations & even for cleaning. I can go back to regular lids. Thanks for attention.

This HydraPak soft bottle is a great size (600mL) for carrying a few on a Day Hike. I've detected no plastic scent or flavor, and definitely appreciate the "collapse as you draw water through the bite valve". The size allows perhaps two in a Pack's elastic water bottle pocket, and an easy carry in a shoulder strap mounted mesh water bottle pocket - this size provides a good volume of water and a reasonable weight at the shoulder.Note, however, that the collapse of the bottle can be a mixed…

The quick open top is great and makes it much easier to fill the flask mid-run. Flasks fit perfectly in a Salomon running vest. I've popped several Salomon flasks and switched to these after seeing a review saying they were higher quality. I cannot really tell a difference, but I also have not popped one yet.

Carried them in a hydration vest’s front pockets. They were full with electrolytes and whilst felt awkward running with these water packs, I was so glad I had them during my 16 miles long run. They worked great, and I loved the extended neck as I didn’t have to fiddle around to get a drink. Very easy to clean, and the drinking part comes apart for a good clean. So happy I got this flask.

One leaked immediately so I could only use one. I like the one that works-I use it regularly for running. The collapsible feature may make it difficult to measure the amount of water consumed!

The valve part broke off when I was taking a drink. I almost swallowed the piece that broke off. I'm so glad I didn't. I've onlyused this product a couple of times so this is very disappointing and concerning for safety.

Got this for my Son-in-law who does a LOT of mountain climbing. He loved it. Said it worked perfectly and fit right in with the rest of his long hike equipment.

I felt compelled to write this review because I almost ended up spending $25 apiece on the extremely hard-to-come-by UD Body Bottle with straws to fit my UD vesta. I decided to give these a shot, and not only they fit my hydration vest perfectly, but the straws were the right length and they are really easy to clean. I am very happy with this purchase and would definitely recommend these bottles!

Planning on using this for skiing. It's nice not to have to take your gloves off to get to a water bottle, or worry about dropping the lid on the lift. Fits in my front pocket, then just grab the straw and sip!