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The Hydro Flask 40oz Water Bottle isn't messing around when it comes to ample hydration. This girth-some bottle ensures you have plenty of H2O for a day on the trails, and the food-grade stainless steel material keeps funky odors at bay. This double-wall vacuum insulated flask also keeps cold items cold for at least 24 hours, and hot items hot for twelve.

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Hydro Flask 40oz. Wide Mouth Water Bottle

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Here's what others have to say...

5 5

I want another one!

  • Familiarity: I've put it through the wringer

I had a couple of the smaller ones, and upgraded to this thing. I thought it was going to be a beast, but it is really handy. I use it a couple of times a week, and everyone else seems to want one too. I had a problem with the lid getting busted up in shipping, but the customer service was amazing. No questions asked, just send use your address and it will be in the mail.

5 5

awesome!

  • Familiarity: I've used it several times

best bottle ever

Responded on

Amazing!!!! I am spending lot of hours outside and the water is really cold. Don't put to much ice inside just a little bit and even those will stay until the next day.

5 5

awesome!

  • Familiarity: I've used it several times

best bottle ever!

5 5

I absolutely LOVE my Hydro Flask(s)

  • Familiarity: I've put it through the wringer

I use Hydro Flask bottles every day and for everything (except cycling due to weight) - these bottles are tough. I've dropped mine multiple times and haven't had a problem. I am able to put ice in my bottle in the morning and still have cold water that evening. This bottle is absolutely worth the money and will not disappoint. To top it all off, Hydro Flask has by far the best warranty in the business.

3 5

Fair heat retention

  • Familiarity: I've used it several times

I purchased the 1.1 liter ( 40 oz ) hydroflask to replace a vacuum thermos ( stainless )I have been using.

I was looking to find a lighter weight and more streamlined " thermos " for winter hiking / camping. I like the fact that the cap is attached and there is not an additional cup / cap that covers it. The weight is also a plus. It's way lighter than my old thermos which has a screw top cap that is covered by a screw on cup.

I tested this out using the pre heat method. My tea was only kept warm for about three hours or so. My old thermos would keep liquids VERY hot for at least five hours and sometimes longer.

One thing I noticed is that when putting hot liquids in the bottle the outside of the bottle got very warm. I tested this vs. hydroflask's growler and my old thermos. The growler and my old thermos when hot water was added did not get warm or hot on the outside of the bottle. I'm wondering if this bottle had / has a vacuum leak or is perhaps defective? By other reviews here it seems like my experience is not the norm. Has anyone else experienced this?

Overall, a good solid product. Well made and stylish. The five percent back is a great thing as well. Performance is fair. By the end of three hours my tea was drinkable but not hot and as I said the outside of the bottle was warm.

5 5

Just like a dream!

  • Familiarity: I've put it through the wringer

Just like the 18oz bottle, this thing kicks some serious ass! I love that I can load it up with cold water, take it into hot yoga and still sip on my cold water through the heat. The size is a little awkward at first, but it's nice not having to always refill.

5 5

Keeps my water cold in the car

  • Familiarity: I've put it through the wringer

This is my second year using this bottle and I think it is great my uses. During the summer when I go down to the Utah desert to do some slot canyons I fill this thing full of ice and the rest with water and it will last a good 48 hours before getting to room temperature. Did I mention I leave it in the hot car all day? I love my cold water so this is a great bottle! I hear I doesn't hold Hot stuff as long, but for my use I'm giving it 5 Stars!

The cap does have a Lifetime warranty through Hydro Flask, so If you ever drop the bottle and break the cap just contact Hydro Flask and they'll send you a new one for free!

How much does the empty 40 oz bottle...

Posted on

How much does the empty 40 oz bottle weigh?

Responded on

According to this guy it comes in at 16.4 ounces. Ouch. (http://woodtrekker.blogspot.com/2012/12/hydro-flask-40oz-insulated-bottle-review.html)

5 5

Warm water on a cold climb

  • Familiarity: I've used it several times

I test ran this bottle during some ice climbing in Ouray, and it was a beautiful thing not to get brain freezes while I was hydrating throughout the day. A little on the heavy side for mountaineering, but still pretty great. It recently fell off my counter and onto the floor and got slightly dented on the bottom, but still seems to insulate fine.

5 5

My favorite bottle from Hydroflask

  • Familiarity: I've put it through the wringer

If you've made it this far, just add this to your cart honestly.

You won't be disappointed. I've had every size of hydro flask and this one is my favorite. It may be a little large for the average person. Most of the time when I pull it out in class or in public I get some pretty funny looks because of the size of it.

Ice will last a few days in this bad boy, which makes it super convenient to just refill and always have cold water. This bottle has changed my life, haha I use it every day, and never go dehydrated.

If you're looking for a beastly water bottle to quench your massive thirst then BUY IT!

4 5

great addtion

  • Familiarity: I've used it several times

I've paired this with my 21oz Hydro Flask. The 21oz is my go-to size. This 40oz is what I throw in the pack or the car if I am going to the outdoors and don't have a need for pack & bladder. Keeps the liquid cool and I can guzzle from this bahama-mama or I can refill the 21oz or the dog bowl.

3 5

It's ok

  • Familiarity: I've used it several times

I wanted to like this - its huge, seemingly bomb-proof, and kinda heavy, so it feels a bit too bulky for backpacking or lugging around on a day hike, but is just the perfect size for desk-side hydration (less trips to the water cooler). It does keep your liquids hot or cold, and does the job really well. My problem came from drops #1 and #2 - now, I'm used to water bottles denting, cracking, and whatnot OCCASIONALLY when dropped, but the first time this bad-larry felt the ground after falling out of my car (maybe a foot and a half) the lid cracked and popped off spilling all my water for the day - awesome! Fast forward a week later of me carefully carrying around a broken-capped bottle to a second fall was from about waist high - it was open, and now the wide-mouth opening is somewhat of an oval shape. In summary: Does the job well - fits with other hydro flask lids, but has some durability issues (or else, im just really rough on my waterbottles....)

5 5

Awesome

  • Familiarity: I've put it through the wringer

Love this bottle and does as advertised. Water stays the same temperature as it was when you put it in for hours.

4 5

winter water

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

I got this for winter camping and to keep my water from freezing I have been using it for a few weeks now and so far so good on my 1 camping trip i had no freeze issues and it has not frozen in the car when i left it over night after work.. it also screwed right onto my MSR water filter so i was able to fill it directly. the only drawback is weight. it is quite heavy empty, but worth it for the insulation.

5 5

Luv this Flask

The best investment as far as a water bottle, ice last all day and water stays cold added the flip lid for easy drinking, no leaks, gotta luv it. Do they make a wide mouth in a 21 oz ?

5 5

Perfect All Around Thermos

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

Hot or Cold, it will not matter. This thermos is wonderful. It keeps your hot liquids hot and your cold liquids cold and is the perfect all around bottle. I found the 40oz bottle to be the perfect size for my needs.

Perfect All Around Thermos
5 5

Nice bottle

  • Familiarity: I gave it as a gift, but have feedback to share

I got this for my fiancee as a gift and it was much bigger than I expected, she loved it.

5 5

Awesome Bottle

  • Familiarity: I gave it as a gift, but have feedback to share

I bought this as a gift for my boyfriends parents, and they love it! It is the perfect size for them to take camping or horseback riding. Not to mention how well it keeps your liquids insulated! It bottle keeps things hot or cold for hours. They are very happy with it!!

5 5

Only bottle you need

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

I am so glad to have found these bottles! After a summer trip to Bend, OR and randomly finding these there (and later realizing it originates from Bend) filled up these bottles with ice cold water, alcoholic beverages, etc and took it floating on the river on a 90 degree day.. friends and I we were sippin on ice cold liquids and getting our sun on for sure. Haven't tried hot liquids yet, but I am certain they will still perform just as well. Highly recommend these hydros. :)

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