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  • Hydro Flask 40oz. Wide Mouth Water Bottle Orange Zest
  • Hydro Flask 40oz. Wide Mouth Water Bottle Acai Purple
  • Hydro Flask 40oz. Wide Mouth Water Bottle Everest Blue
  • Hydro Flask 40oz. Wide Mouth Water Bottle Arctic White
  • Hydro Flask 40oz. Wide Mouth Water Bottle Black Butte
  • Hydro Flask 40oz. Wide Mouth Water Bottle Classic Stainless
  • Hydro Flask 40oz. Wide Mouth Water Bottle Green Zen
  • Hydro Flask 40oz. Wide Mouth Water Bottle Lychee Red
  • Hydro Flask 40oz. Wide Mouth Water Bottle Pinkadelic

Available colors

  • Hydro Flask 40oz. Wide Mouth Water Bottle Orange Zest
  • Hydro Flask 40oz. Wide Mouth Water Bottle Acai Purple
  • Hydro Flask 40oz. Wide Mouth Water Bottle Everest Blue
  • Hydro Flask 40oz. Wide Mouth Water Bottle Arctic White
  • Hydro Flask 40oz. Wide Mouth Water Bottle Black Butte
  • Hydro Flask 40oz. Wide Mouth Water Bottle Classic Stainless
  • Hydro Flask 40oz. Wide Mouth Water Bottle Green Zen
  • Hydro Flask 40oz. Wide Mouth Water Bottle Lychee Red
  • Hydro Flask 40oz. Wide Mouth Water Bottle Pinkadelic

Hydro Flask 40oz. Wide Mouth Water Bottle

$36.99

Free 2-Day shipping on orders over $50*

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    • Orange Zest, One Size
        $36.99
    • Acai Purple, One Size
        $36.99
    • Everest Blue, One Size
        $36.99
    • Arctic White, One Size
        $36.99
    • Black Butte, One Size
        $36.99
    • Classic Stainless, One Size
        $36.99
    • Green Zen, One Size
        $36.99
    • Lychee Red, One Size
        $36.99
    • Pinkadelic, One Size
        $36.99
    in stock
    5.0 5 49

    49 Reviews

    Details

    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
    • Item #HYF000K

    Tech Specs

    Material
    18/8 stainless steel
    Volume
    40 oz
    Claimed Weight
    [with cap] 1 lb
    Recommended Use
    hiking & camping, everyday
    Manufacturer Warranty
    lifetime

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Amazing!

    • Familiarity:I've put it through the wringer

    I now own five Hydro Flasks and i can honestly say that i will keep buying them, they are absolutely amazing for both hot and cold drinks. The 40oz bottle is by far my favorite, yes its heavy and big but for everyday life its great to fill with ice water or tea depending on the day and have it stay hot or cold all day long is such a large quantity.

    Cold water is everything

      Being 25 days in a trip finally I have to said yes and gave up my favorite water bottle, everybody love it so I had no chance and I bought another one. I feel so nice about my Hydroflask when people didn't stop talking about how cold the water can be even within 7 hours out of the fridge.

      Betcha can't own just one!

      • Familiarity:I've put it through the wringer

      Hydroflasks are great! Bottles are insanely durable, and can keep you drinks cold for days, or hot for hours. I love the 40oz, fill it up with tea and use it as a thermos for those cold days of touring.

      Put some dents in it

      • Familiarity:I've put it through the wringer

      This water bottle looks better with dents. Drop it off your bike, pack, or out of your hands... it's fine. It holds temperature for hours. If you are putting hot liquids in it the outside of the bottle will not be hot. The lid never leaks. Not the lightest bottle but who cares. This thing is burly. Awesome colors. Everyone loves Hydro Flask.

      Put some dents in it

      Love it

      • Familiarity:I've put it through the wringer

      As a teacher all of my colleagues are obsessed with these things. The ability to keep things cool for so long is important to us, as we don't have the time or ability to be constantly be adding ice to our water throughout the day.

      I recommend these to anyone that wants to keep their cold drinks cold, or hot drinks hot... they perform flawlessly. And they even look dignified after being dropped and dented up!

      Great Bottle

      • Familiarity:I've put it through the wringer

      I've joined the bandwagon of Hydro Flask. I'm a River Guide in Utah and this bottle becomes an extension of my body throughout summertime. I fill it with ice and by the end of the day, they're still ice in it, even through the desert heat.
      On multi-day trips, the ice melts pretty fast. This isn't from the heat of the desert, but from additional water I add to it constantly through the day.
      I've duct taped webbing on the bottle for a shoulder strap on this bottle. This makes it so I have this bottle on me most of the day, most of the summer. I'm probably too attached to it..
      My only warning for anyone looking at these: these bottles are not indestructible! They are made of metal, but that does not mean you can abuse them. If you dent them bad enough, the walls of the bottle will touch and it will lose its insulation, and all you'll have is a heavy metal Nalgene.

      Annoyingly wide mouth.

      • Familiarity:I've put it through the wringer

      I like this bottle for a lot of reasons. But aside from being slightly easier to clean, i dont much like the wide mouth. I like to drink stuff while in a moving car or while walking, and its messy (or painful if its coffee) with such a massive opening. The narrow mouth versions can still fit most ice cubes and still be cleaned.

      Perfect for everything

      • Familiarity:I've used it several times

      This thing is close to one of the best things that has ever happened to me, the key to success with this thing is putting in liquids at the temperature you want them to be when you are ready to drink. If you put in too much ice to keep everything cold it will never melt, and if you put in boiling hot water it will still be boiling hot when you are wanting to drink it.

      Hydration at it's best

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

      For me the best part about drinking water is it's cool refreshing feeling. This Hydro Flask insures that. It's an insulated bottle, as well as cap. Your water will stay cold for hours on end , thanks to the vacuum technology in this awesome water bottle. I've never enjoyed a nice cold sip of water more.

      Love it!

      • Familiarity:I've put it through the wringer

      I love my 40 oz. hydroflask. I have 20 oz. bottles for my girls, but I needed something bigger. The 40 oz. is perfect for all day hikes in hot weather. This sucker keeps my water ice cold all day long, even if I'm in the sun all day.

      I seriously never go anywhere without it. Best water bottle ever.

      Awesome Bottle

      • Familiarity:I've put it through the wringer

      I cant say enough good things about Hydro Flask. This company has perfected how to make a proper water bottle. These things keep their contents cold or hot for hours. I can put coffee in it in the morning and come home from work that night and it is still hot and steaming.... Pretty incredible.

      Hydro Flask 40oz

      • Familiarity:I've put it through the wringer

      Great water bottle for short trips since it does have added weight for the insulation. I will take on the extra weight if I am spending the day fly fishing with the shorter hike from the car to the river but if I am going for a longer day hike I generally fill it with ice and water and leave it in the car so I have extremely cold water for my return and just use either a hydration bladder or nalgene for the hike. I purchased the smaller 18oz for my morning coffee or sometimes fill it with hot cider during fall hikes. Interchangeable lids is also a great feature!

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

      Best Answer

      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.