Soft Flask Running Bottles Collapsible Water Bottle Foldable for Traveling Running Vest Collapse Hydration TPU 500ml for Runner (500ml-Pack of 2)

Super Useful with the Bite Valve
This is my first collapsible water bottle, so though I enjoyed the quality of it and how it compacted well in my bag and in my pockets while running, I was a bit confused with the best way to drink it. I at first tried loosening up the top and sucking or squeezing the bottle, but then I’d have to tighten it so it wouldn’t leak again.Then I figured out the bite valve, which made drinking super easy with no leakage whatsoever. Basically, you can keep it tight enough that no water leaks even when you squeeze it and you just bite the top portion of it to release the valve so you can drink. That way you never have to take off the top or adjust it. Once I got that, it became super useful since I run everyday and before this I held a metal bottle in my hand which was a lot more inconvenient.I’ve been taking this with me on runs now for a couple weeks, and I still get a little bit of the plastic smell, but overall it’s bearable and I’m pretty sure it’s going to disappear with time. One thing I’d advise against is filling this up with anything except for water because it’d be a pain to clean out anything sticky. Even with just water, scrubbing this is already kind of annoying, but it’s something I deal with because it’s too useful for running.

Just OK
Not sure this product offers a value for the money. The flask material is soft, but it feels REALLY soft…as in thin and fragile. There is very little structure to it which makes it awkward to hold and carry. I originally wanted it for keeping in my backpack when traveling, but it is too squishy to stay in the bottle holder pocket and too fragile to trust it inside the bag. Mouthpiece feels cheap. Overall it does what it says it does, but I have serious doubts as to the longevity and durability of this thing.

Great idea for hikers, runners, travelers
This is a great idea and I wish I had found these sooner. I do a lot of traveling and am tired of buying really expensive water on the other side of security. I have brought empty water bottles through, but they take up space in my carry-on. This is the perfect size to fit in my carry-on when full of water but can be folded or rolled up when empty to save space so everything isn’t so tightly packed. It works great for hiking for the same reason.The rubber is really soft and flexible but still strong. To drink out of it you bite down on the end and squeeze the bottle. It doesn’t leak otherwise, even without the cap on. It is easy to clean by just filling it with soapy water.The only thing I question is the thin piece of plastic that attaches the cap to the bottle. Mine hasn’t broken but I am wondering how long it will last. It wouldn’t be a huge problem if it breaks, since the bottle is leak-proof without it, but it does keep the tip protected from dirt.Otherwise it is well designed and well worth the money.