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Nothing quenches your thirst like a 40, the Hydro Flask 40oz Wide Mouth Water Bottle, that is. The wide-mouth opening works well for ice-cubes and easy pouring, and double-wall vacuum insulated construction means your stuff stays hot or cold.

  • Large (wide mouth) opening
  • Double wall vacuum insulated
  • Keeps hot up to 12 hours
  • Keeps cold up to 24 hours
  • BPA-free
  • 18/8 stainless steel
  • Signature powder coat

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Hydro Flask 40oz. Wide Mouth Water Bottle

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Here's what others have to say...

4 5

good product

  • Familiarity: I've put it through the wringer

It is great in terms of keeping your drinks cold on those hot days. Only down side, it is bulky and heavy!

5 5

Amazing product

i bought my gf and i one recently. ive used it everyday. keeps ice cubes whole forever it seems and my water is winter time tahoe lake cold. If these didn't have a lifetime warranty i would buy more in a heart beat but my one is good for now

5 5

love it!

  • Familiarity: I've put it through the wringer

I love my hydro flask! It keeps my water very very cold. I use it everyday and take it everywhere with me. I am so happy my co-worker suggested I purchase it. Thank you Kristi

5 5

Amazing!

  • Familiarity: I've used it several times

Whem I first got this bottle I filled it with ice and water and left it in my car during 70-80 degree weather and still had ice 2 days later! I then filled it with water that I heated on the stove and then put it in the fridge overnight. So 9 hours later I opened it, still hot and steaming! Love it and lifetime warranty!

5 5

life changer

  • Familiarity: I've put it through the wringer

this is the best purchase ive made in a long time. i love love love cold water. with this hydroflask i have completely stopped drinking caffeine and upped my intake of water. i think everyone should own one.

Does this come with any other lids besides the screw on one? Or would you have to order it separately?

Anyone know the height and diameter of the 40oz bottle? Wondering if it will fit in the holder on my bag.

Best Answer Responded on

I don't have exact measurements, but I have mine in front of me as we speak (see photo). It's no wider than a Nalgene, but a few inches taller and more than a pound heavier when full. If you have an unusually shallow water bottle pocket, it might topple out, but otherwise should be totally fine.

I don't have exact measurements, but I have mine in front of me as we speak (see photo).  It's no wider than a Nalgene, but a few inches taller and more than a pound heavier when full.  If you have an unusually shallow water bottle pocket, it might topple out, but otherwise should be totally fine.
Responded on

Angus is spot on: think of this thing as a very tall 1L Nalgene bottle and you're going to be very close to actual size.

5 5

I understand the cult following now...

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

I have seen the love people have for the Hydro Flask, but now I understand it. I got my 40 oz. blue flask yesterday, and is becoming on of my favorite pieces of gear. I am able to make tea in the morning when I am getting ready for work, and have hot tea all day!

...so good that I picked up another one!

Responded on

LOL... this is exactly my experience with these flasks. I picked one up to bring tea to work... and then I picked up another so that I'd have hot tea ready when I got home from work too.

5 5

Wish I would have never returned

  • Familiarity: I've used it several times

LOVE LOVE LOVE this bottle.
Originally got the purple, loved the color.. thought the bottle was too big. I did return it. HOWEVER after ordering the 21oz bottle I changed my mind immediately and ordered another 40oz.

Love that I can get ice directly from the fridge straight to bottle. Worth every penny!

5 5

Great!!

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

Took this with me on a very cold day with hot chocolate in it, was gone most of the day, and when I got back to the car it was still Hot.I would recommend this very highly.

5 5

love it!

I love this water bottle, it is by far the best one I have ever owned. It holds a lot of water and it keeps my drink cold for a very long time.

5 5

this is awesome

holds a lot of water keeps things really cold for a long time. favorite water bottle I have ever had

5 5

Awesome

  • Familiarity: I've used it several times

This was my first Hydro Flask and it is awesome. I go snowboarding all the time and it keeps my drinks warm the whole time. I haven't used it to keep things cold yet but im sure it will work good if it keeps it as cold as it does warm.

5 5

Cold as ice

  • Familiarity: I've put it through the wringer

I live in a desert.
I'm active outside.
I LOVE a dose of cold water hydration after a long stupidly-hot summer bike ride.
I leave this full of cold water in my car.
It gets hot enough to fry eggs on the hood.
I return after HOURS on my bike and the water is still VERY COLD.
Awesomely refreshing.
It's amazing.
I wold love to see a 24 and/or 32oz wide mouth version.
I wold collect them all.
You should, too.

Responded on

Check out their website, the have 24/32/40oz models - even a beer growler!

5 5

Amazing

  • Gender: Female
  • Familiarity: I've used it several times

I purchased this because of reviews I was reading on a Disney site. I LOVE these flasks! My coffee stays hot for hours. I have not had a chance to use them for anything cold yet. I did however ask for more of these on my Christmas List!!