Owala FreeSip vs Hydro Flask Wide Mouth

Quick Verdict

The Owala FreeSip 32 oz scores 80.05/100 in our current WBA scoring system, while the scores 76.21/100.

See the full comparison table ↓

Sizes and lids change this comparison more than you might expect

I don’t think it’s accurate to talk about either of these as if there were only one Owala and one Hydro Flask.

In our database, we’ve personally tested the classic Owala FreeSip in 24 oz, 32 oz, and 40 oz sizes. Size changes the weight, dimensions, portability, and sometimes how much I actually enjoy carrying the bottle around all day.

Hydro Flask adds another variable: the cap.

For the 32 oz Wide Mouth alone, our current testing covers .

And the cap really does change the bottle.

A Hydro Flask with a Flex Straw Cap is a very different everyday experience from the same bottle with a basic Flex Cap. Drinking method changes. One-handed use changes. Cleaning changes. The number of parts changes. Even how comfortable the bottle feels during normal use can change.

That’s why I don’t think every Hydro Flask Wide Mouth should receive one universal score.

The comparison table above is always the source of truth for the exact configuration you’re looking at.

Owala slightly wins my standard cold-retention test — but there’s more to the story

For the 32 oz configurations compared here, both bottles started our standard 24-hour cold-retention test at 1°C (33.8°F).

Owala finished at 10.7°C (51.3°F).

Hydro Flask finished at 12°C (53.6°F).

So under our standardized indoor test conditions, Owala wins.

The difference isn’t big enough that I would choose Owala on insulation alone, though.

One reason is that standardized testing doesn’t always tell you everything about how a bottle behaves in real life.

I once did a separate experiment where I left both bottles inside a hot car through extreme summer conditions. I wanted to see what would happen when I moved away from the nice, controlled environment I normally use for insulation testing.

Hydro Flask handled that situation noticeably better than Owala.

I don’t use that experiment to overwrite the standardized results in the comparison table. The controlled test is still the fair way to score both bottles.

But it’s exactly the kind of real-world experience I think is worth knowing before buying one.

There’s another difference too: the Hydro Flask configuration tested here supports hot drinks, while the Owala FreeSip does not. In our 12-hour hot-retention test, the Hydro Flask finished at 53.8°C (128.8°F).

So for cold water alone, Owala has the slight edge in our standard test. If I want one bottle that can handle a wider range of temperatures and situations, Hydro Flask is more versatile.

I still prefer the FreeSip lid for actually drinking water

This is where Owala really wins me over.

The FreeSip lid sounds slightly gimmicky until you actually use one for a while.

Then regular bottle lids start to feel a little primitive.

I can drink through the built-in straw without tilting the bottle, or tip it back and drink through the larger opening. The tested FreeSip configuration gives me three drinking methods, and our current testing rates its drinking comfort as Perfect.

But numbers don’t fully explain why I like it.

I really appreciate that the drinking area stays hidden underneath the cap. If I throw the bottle into a bag, the part I’m going to put my mouth on isn’t sitting there collecting dust, lint, or whatever else is hiding at the bottom of the bag.

I also like the little carry loop that flips over the release button and doubles as a lock. It’s a tiny feature, but it feels like somebody actually thought about what happens when you carry the bottle around every day.

Hydro Flask’s advantage is choice rather than one brilliant lid.

If I’m working at my desk, I like a straw cap. If I want water quickly, I prefer a chug-style opening. And if I want the simplest possible setup, the Flex Cap does exactly that.

My only recurring annoyance with Hydro Flask is that some caps can become surprisingly stubborn if I tighten them too much. I’ve had moments where I basically had to fight the bottle to get the cap off.

So my personal verdict on lids is simple:

Hydro Flask has the better lid ecosystem. Owala has my favorite individual lid.

Hydro Flask with the Flex Cap is much easier to clean

Cleaning isn’t the feature anyone gets excited about when buying a bottle.

After a few weeks of daily use, it becomes a lot more important.

I’ve learned that lesson the unpleasant way too. I once left a milky drink sitting in a Hydro Flask for far too long. The smell when I finally opened it was enough to permanently cure me of the idea that bottle cleaning is optional.

For the exact configurations compared here, the difference is substantial.

The Hydro Flask Wide Mouth with Flex Cap took 1 minute 38 seconds to fully clean in our current test.

The Owala FreeSip took 2 minutes 45 seconds.

That makes sense when you take them apart.

The Hydro Flask setup tested here has 2 total parts, while the Owala has 4. Owala’s lid is more sophisticated, but sophistication creates more places that need attention.

That’s the trade-off.

I prefer drinking from the FreeSip lid, but if I’m standing over the sink cleaning bottles, I’ll take the simpler Hydro Flask setup every time.

And this is exactly why the selected Hydro Flask cap matters. Change the cap and you may change the cleaning experience too.

Both passed our leakproofness testing

This is one area where I don’t have much drama to report.

Both configurations passed our leakproofness testing, and both have secure resistance to accidental opening.

That’s what I want from a bottle.

The difference is more about how each brand achieves it.

Owala gives you the push-button FreeSip system with the locking carry loop. Hydro Flask’s Flex Cap is much simpler.

Personally, I enjoy Owala’s mechanism more. But if your philosophy is that fewer moving parts means fewer things to think about, I completely understand choosing the Hydro Flask.

Which one should you buy?

Choose Owala FreeSip if…

I’d choose Owala if most of what you drink is cold water and the everyday drinking experience matters most.

The FreeSip lid is the star here. It’s comfortable, versatile, easy to operate with one hand, and keeps the drinking surface covered when you’re not using it.

In the exact 32 oz comparison shown here, Owala also has the higher WBA Score and slightly better standard cold-retention result.

For sitting at a desk, walking around town, or simply trying to drink more water during the day, I understand why people get attached to Owala very quickly.

It has more personality too. Hydro Flask feels like equipment. Owala feels like something you actually enjoy using.

Choose Hydro Flask Wide Mouth if…

I’d choose Hydro Flask if I wanted one bottle platform that I could adapt over time.

That’s the biggest advantage of the Wide Mouth system for me.

You don’t have to commit to one drinking style. Change the cap and the bottle can behave differently. The simple Flex Cap configuration tested here is also much quicker to clean, has the more comfortable carrying handle, and supports hot drinks.

I also can’t completely ignore how well Hydro Flask performed when I pushed both bottles outside normal test conditions in that hot-car experiment.

The standardized WBA table is what determines the score.

But when I’m deciding what I personally want to carry on a very hot day, experiences like that stay in the back of my mind.