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Hydro Flask 40oz Wide Mouth Water Bottle


Item # HYF0017

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  • Black, One Size ($42.95)
  • Cobalt, One Size ($42.95)
  • Olive, One Size ($42.95)
  • Blueberry, One Size ($42.95)
  • Pacific, One Size ($42.95)
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Item # HYF0017



Fill Hydro Flask's insulated 40oz Wide Mouth Water Bottle with ice and water for hot hikes, or warm tea for cold ski tours. Its TempShield insulation keeps water ice-cold for up to twenty four hours, and it keeps hot drinks toasty for up to six hours. Hydro Flask updated this years' model with a flexible loop on the wide mouth cap for long-lasting convenience.

  • Pro grade stainless steel
  • TempShield double insulation
  • Flex cap
  • BPA-free

Tech Specs

18/8 stainless steel
40 fl oz
Recommended Use:
casual, hiking
Manufacturer Warranty:

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Stay Hydrated

  • Familiarity: I've put it through the wringer

Use this every day. Holds SO much water, I love it. Keeps cold for hours on end. I will never be thirsty again. Also, plenty of room for stickers if you need somewhere to put those. Be sure to pick up the Hydro Flask Wide Mouth Straw Lid too and take your hydration to the next level.

Ice lasted for days

    Very cool bottle, ice would last for couple of days, must have for utah summer.

    Hydro Flask for the win!

    • Familiarity: I've used it several times

    Already love this bottle, just needed it in my favorite color Olive. I am about to Order a Navy Blue one as well. Can never have enough bottles. DRINK WATER!

    Everyday Bottle!

      bought a couple of these for my parents who live in the hot state of arizona where they needed something to keep their water cold all day - and this does the job! perfect size and function.


      • Familiarity: I've put it through the wringer

      I love the 40 oz. I've usually only had about 32 oz or so, but the extra 8 oz really is nice!

      Favorite bottle

      • Familiarity: I've put it through the wringer

      Everyone who owns one will agree that these are the best bottles around for keeping any liquid hot or cold for super long periods of time. The seal is also consistently tight and keeps carbonated beverages fresh. If you drop things a lot (like me) these will get small dents pretty easily, but even with the dents it's still my favorite bottle.

      Keeps you Hydrated

      • Familiarity: I've used it several times

      I absolutely love this water bottle. I got the Olive Green and it is such a pretty color. Might have to get another one!

      Avg. ride time: 0m per week
      • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

      Can't go wrong with Hydroflask

        I'm never disappointed with Hydroflask. This keeps ice for days, so I'm never without cold water. Love it!!

        Hot or Cold drinks anywhere anytime

        • Familiarity: I've put it through the wringer

        I used to exclusively use a Nalgene to carry my water. In the winters the water was frozen and in the summer my water was boiling hot. No more! The Hydroflask has changed my life. Keeps my ice water icey all day, even in 100 degree Utah summers. Keeps beer cold so you can have a refreshing reward after the long ride. Also keeps coffee very very hot if you are a caffeine addict like me and need over a liter of coffee to function.


        • Familiarity: I've put it through the wringer

        Ive never used it for hot liquid... but it definitely keeps my drank frosty cold! highly recommend to anyone/everyone.

        Best Bottle Around

          You can't beat Hyrdoflask's insulation. Keeps cold cold and hot hot for way longer than you would ever expect.

          A MUST HAVE!

          • Familiarity: I've used it several times

          I love my hydro flask, I always have it with me! Fill it full with ice and water and you will have ice cold water all day! You can never have enough hydro flasks!

          graduating from 18 oz to 40 oz

          • Familiarity: I've used it several times

          i have a blueish 18oz that i keep at work and take w/me when i go out for lunch, as I work in dc. who wants to spend an easy $2.50 per drink when water at work with ice is free and ice cold? i've gotten used to bringing the 18oz w me whever I go. but now that it's summerish time here in dc, that means more hydration...and nothings better than 40oz of iiice cold water.

          i have another hydroflask that i take w/me when i travel and it's a lifesaver...add ice to the brim, and slowly during the day it melts but not completely....

          i wonder why others don't get a hydroflask to keep hydrated?!

          Love Hydro Flask - but dents do occur

          • Familiarity: I've put it through the wringer

          I love Hydro Flak - the colors and the functionality make me want to buy more (for myself, family and friends)! I got the 40 oz wide mouth in the outgoing color of Mango on sale from Backcountry. Love the size, that it's big enough to hold all the water I need during the day. The only thing was that it came wrapped in a bubble sheet (not a sealed bag), which I didn't know until I dropped on the hard concrete floor twice (I took it out of the wrap to see it in the garage, then put it back in the wrap, without realizing it was just a bubble sheet wrapped around the body of the bottle - open both the top and bottom - and not a bubble bag with only one side open! Sadly the bottom of the bottom got dents before I even got to use it. :( The good news is that nothing cracked or deformed badly (so it's a sturdy product!). I'm keeping it because I figured I'd get dents sooner or later as I use it on a daily basis. So just be careful handling it, people!


            I loved the color! It worked perfect throughout the school day for my daughter, and she would come home with ice cold water. it was really fast shopping, until it got stolen at my daughters school. we bought a flamingo 40 oz so she can still have one. worth the high price!

            It's Hydro Flask!

            • Familiarity: I've used it several times

            It's all about the Hydroflask! Ever since these came out big, I have wanted one. Since they are a bit pricey, I haven't gotten around to getting one. But finally. Finally! This product is well worth the investment. Especially when it's really hot outside, this thing is a lifesaver! Perfect size for throughout the day, light for what it is, and just overall a great aesthetic. I'm glad I bought this.

            Hydroflask = Awesome

            • Familiarity: I've put it through the wringer

            You can keep beverages hot or cold and if you like ice you will have for days. Amazing product and amazing company!

            What can you say

            • Familiarity: I've put it through the wringer

            Industry standard water bottles at this point. Everyone knows hydroflask keeps it hot or cold and are super durable. Great gifts, great for yourself.

            My favorite water bottle company

            • Familiarity: I've put it through the wringer

            The 40 oz bottle is perfect, especially if you like hot yoga. Nothing like ice cold water when you are dying from the heat in your Bikram studio. Just make sure you drink the water and not pour it down your front side.

            Excels at Hot or Cold

            • Familiarity: I've put it through the wringer

            I have multiple hydro flasks under 32oz but finally took the plunge on the 40ozer when I wanted something to keep at my desk or take on long trips. It is an absolute tank - great color quality and super solid construction. I find that if I fill it with water and some ice early in the morning I’ll still have ice in there by end of day and before bed. Same goes for hot beverages - will keep 40oz of coffee hot for at least 6-8 hours.

            I use it the most for water but it’s also fantastic for iced coffee or tea as it keeps them so cold it stops the drink from becoming watered down.