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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...

5 5

Gets it Done!

  • Familiarity: I've put it through the wringer

It keeps the hot stuff hot and the cold stuff cold, for a long time. Boom!

5 5

Great bottle

The bottle is great. Keeps cold stuff cold. Have not tried the other end of spectrum but it's got to be good.

5 5

best water bottle I've used.

  • Familiarity: I've put it through the wringer

This thing works! keeps ice even after leaving in a hot car in Vegas while climbing!

5 5

Hot coffee good, cold coffee bad

  • Familiarity: I've put it through the wringer

Coffee good. Hot coffee better. A liter of coffee that will burn your tongue 8hrs after it's been brewed is best. The only problem is that it doesn't fit in my cupholder in my car but no liquid leaks when it's on its side. 40 oz to freedom.

5 5

Rad Bottle

  • Familiarity: I've put it through the wringer

I absolutely love this bottle. First off its huge. It holds quite a bit of liquid!

This bottle has kept water cool with ice still in the bottle for hours. I have left this in my car during 100 degree weather and still have cool water to drink. The only problem is that when left in the sun a long time it can burn your hands pretty good! But other than that I would recommend this bottle to anyone!

5 5

Fantastic!
Fantastic!

  • Familiarity: I've put it through the wringer

I love my hydroflask waterbottle(s)!

5 5

Best. Waterbottle. EVER.

  • Familiarity: I've put it through the wringer

I bought this for my husband as a gift and ended up buying a 32 oz bottle for myself. We also have the 18 oz bottles for our morning coffee. These bottles are much heavier than traditional bottles (nalgene) and are not as durable. The bottles should not be put in the dishwasher. My husband did that to his first one and it messed up the liner and it no longer kept beverages cold/hot for very long. They also don't seem to fit in most traditional cup holders. Although they have some minor downfalls, these bottles are AMAZING!

I'll put ice cubes in the bottle in the morning and they are still there the next morning! I've left my bottle out in the car on 90 degree days and I'll still have ice cold water when I open the bottle. I've noticed for warm beverages, it's best to condition the bottle by pouring in a hot liquid for 5-10 minutes prior to putting in your drink of choice. This helps the liner of the bottle get really hot and it will keep you drink warmer for much longer.

I absolutely love Hydroflasks and would recommend them to anyone!

5 5

amazing water bottle

  • Familiarity: I've put it through the wringer

Look, I bought this thinking, "yea, yea, another metal water bottle". Then I got it and started using it. It is so amazing that I get mad if I accidentally leave it at home in the morning. I can put ice in it first thing in the morning and 4-5-6-7 hours later it is still in the water bottle. It really does keep drinks cold for 24 hours! I haven't tried it with hot drinks yet since it is the middle of the summer, but I tell you what, if I was stuck on a desert island alone and I had 3 wishes one of them would be to have a hydro flask! I love it!

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.