PocketFlask 500ml - Compressible, Low Profile Soft Flask Water Bottle, Ideal Fit for Run Belts and Form Fitting Pockets with Locking Cap (500ml / 17oz)

Like other runners, I have countless water flasks, Camelbak, Hydrapak’s various models (including their easy fill version, hand-held version, etc). This new design is low/thin profile which is perfect for fitting two flasks into a Naked belt. That combo is great for trail running. And also good for road marathons - I’d rather skip the busy aid stations. The lock mechanism is a huge plus. When you put other bottles in a belt, pressure always squeezes the drinking valves causing annoying leaks. That doesn’t happen on this new design. The only compromise is that the bottle opening for refilling is considerable smaller. I have done a road race with these yet. So can’t speak to how fast/slow refilling would be from a typical water jug at a road race.

For perfect in my hydration belt and do not leak. Bonus is that they are dishwasher safe!

Works great for backcountry hydration

This holds quite a bit of my energy gel. I store it in my back pocket of my jersey while cycling and its easy to grab and use while still pedaling. The flask wall is thick enough I don’t worry about puncturing it and it hasn’t leaked yet from the lid. My only problem with this is I still have yet to figure out how to easily open and squeeze out the gel. The lid has a dial that goes from open to close easy enough but the plunger at the tip is difficult to open. Overall, this is a great item for what i use it for.

Leaks after a few uses. I followed all the instructions for cleaning, but now there's a hole in the bottom of the container. I contacted them for support but they haven't replied. not durable or worth the price.

Love this thing. Use it all the time with me Naked belt. Killer combo. Almost never wear a pack anymore and never have to carry a handheld.

Leakproof, easy to clean, and great quality. Fits in my running belt well. Love it.

I'm a big fan of HydraPak and have tons of their products, but this one was a bit of a miss for me. It works as advertised and the locking cap is nifty, but I haven't experienced any practical upside to this versus just using a regular 500ml flask. Basically anywhere I can stuff this, I can also stuff a regular 500ml flask, but a regular 500ml flask can fit in places where this can't. With 42mm locking caps available, I just don't see any reason to pick this as the tradeoff for the smaller opening just isn't worth it.

Ottima!!! Tenuta perfetta non perde acqua lavata la prima volta con acqua e bicarbonato… non sa assolutamente di plastica! Una volta vuota occupa pochissimo spazio

Compressed well and did not leak. Everything one needs from a travel bottle.

Good quality soft flask, stop water system is working flawlessly.

Schön flacher Verschluss. Drückt viel weniger als runde Verschlüsse