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Hydro Flask 40oz Wide Mouth Water Bottle

Hydro Flask 40oz Wide Mouth Water Bottle

Item # HYF0017

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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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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.

    Can't beat it!

    • Familiarity: I've used it several times

    I had to give one of these a try to see what the hype was all about and sure enough, I can see why people love Hydro Flask. They keep things soooo cold for hours, which is perfect when you're out in the sun and need a cold drink. Absolutely stoked on this purchase!

    Only the Best

      Nowadays everyone knows about vacuum insulation, Well Hydro Flask was one of the first to come out with this technology and they have done it right from day one. Super durable and overall just awesome! Hydro Flask is a great company based out of Bend, OR.

      Only the Best

      Best water bottle in the game!

      • Familiarity: I've put it through the wringer

      Hands down my favorite water bottle I've ever bought. They can be a little spendy, but they last for ever and do a great job at keeping your water cold and ice cubes frozen (even when it's 100 degrees out) ! They can be a little on the heavy side, but totally worth it!

      Liked it so much I bought another

        I own two Hydro Flasks - one 20 oz & one 40 oz - and I liked the 40 oz one so much I just ordered another in Mango (from However, it hasn't arrived yet so it remains to be seen what condition it will be in and how well-packed it will be. The only caveat I have about Hydro Flasks is that they dent rather easily so this time I made sure to purchase a silicon protective sleeve. The first 40 oz I ordered (stainless steel color) was also purchased from backcountry and arrived in good condition so I anticipate no problems but you never know. These things are great for keeping my filtered ice water cold for up to 2-3 days in winter and about 24 hours in summer. Can't ask for more.

        Can't get enough

        • Familiarity: I've put it through the wringer

        It is a bit of investment if you are paying full price but the Hydroflask bottles never disappoint! Any time I see a sale I jump on it, they make the absolute best gifts! Every person I have purchased them for raves about them and wants more. They tend to get dented up over time as I am a naturally clumsy person but the insulation lasts through it all!

        40oz's of Heaven

        • Familiarity: I've put it through the wringer

        Hydroflask is my go to insulated bottle. I have a few different sizes and they never appoint. The 40 oz is my go to everyday water bottle. It gives me a great amount of water without needing to fill it up too often. In mid summer you can put ice in it and it will be cold when you get home at night.

        Cold Water All Day Long

        • Familiarity: I've put it through the wringer

        My favorite to grab and go water container. Fill with ice, cold water, and stays cold for hours. No more plastic, this is the way to go. Great colors. And, as always, a fantastic gift...share the love for your friend and for the planet. Loop handle lid (easy carry when on crutches) or straw lid for a quick sip. I have and use both.

        Good deal

        • Familiarity: I've put it through the wringer

        I always wanted one and I caught the 40 oz on sale I love it I'm getting my mom one

        Good deal

        Can't Leave Home without It

        • Familiarity: I've used it several times

        Highly recommend this water bottle! Keeps my water cold on long hikes or even at work. I also really love how this doesn't sweat water everywhere either!

        The real deal.

        • Familiarity: I've put it through the wringer

        I own many water bottles but my Hydro Flasks are always the first ones I reach for. I really like the new lid, it is more durable than the last generation. The 40 oz. size is great for long days outside.