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  • Hydro Flask 21oz. Standard Mouth Water Bottle Arctic White
  • Hydro Flask 21oz. Standard Mouth Water Bottle Acai Purple
  • Hydro Flask 21oz. Standard Mouth Water Bottle Black Butte
  • Hydro Flask 21oz. Standard Mouth Water Bottle Classic Stainless
  • Hydro Flask 21oz. Standard Mouth Water Bottle Everest Blue
  • Hydro Flask 21oz. Standard Mouth Water Bottle Orange Zest
  • Hydro Flask 21oz. Standard Mouth Water Bottle Pinkadelic Pink
  • Hydro Flask 21oz. Standard Mouth Water Bottle Foliage Green

Available colors

  • Hydro Flask 21oz. Standard Mouth Water Bottle Arctic White
  • Hydro Flask 21oz. Standard Mouth Water Bottle Acai Purple
  • Hydro Flask 21oz. Standard Mouth Water Bottle Black Butte
  • Hydro Flask 21oz. Standard Mouth Water Bottle Classic Stainless
  • Hydro Flask 21oz. Standard Mouth Water Bottle Everest Blue
  • Hydro Flask 21oz. Standard Mouth Water Bottle Orange Zest
  • Hydro Flask 21oz. Standard Mouth Water Bottle Pinkadelic Pink
  • Hydro Flask 21oz. Standard Mouth Water Bottle Foliage Green

Hydro Flask 21oz. Standard Mouth Water Bottle

$27.99

Free shipping on orders over $50*

Select style & size:

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  • Select options
    • Arctic White, One Size
        $27.99
    • Acai Purple, One Size
        $27.99
    • Black Butte, One Size
        $27.99
    • Classic Stainless, One Size
        $27.99
    • Everest Blue, One Size
        $27.99
    • Orange Zest, One Size
        $27.99
    • Pinkadelic Pink, One Size
        $27.99
    • Foliage Green, One Size
        $27.99
    in stock
    5.0 5 12

    12 Reviews

    Details

    Hydro Flask's most versatile and popular bottle, the 21oz Standard Mouth Water Bottle keeps your hot stuff hot and your cold stuff cold. 

    • Medium (standard 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 #HYF000E

    Tech Specs

    Material
    18/8 stainless steel
    Volume
    21 oz
    Claimed Weight
    [with cap] 11.2 oz
    Recommended Use
    hiking & camping, backpacking, everyday
    Manufacturer Warranty
    lifetime

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    The Best!

    • Familiarity:I've put it through the wringer

    Everyone should own one of these water bottles no joke. It is hands down the best wattle bottle I have ever owned. Your ice stays ice all days long with no condensation on the outside of the bottle. Hot coffee or tea stays hot for 4-6 hours. You can't go wrong with a Hydro Flask. There are many different sizes and colors to choose from.

    Hop on the Bandwagon!

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

    Seriously, do yourself a favor you will not be disappointed..
    Hands down HydroFlasks are the best water bottle I have ever owned and I had to share the love with my family as gifts. These bad boys come in awesome colors and they keep your beverages hot or cold for what seems like an eternity. I have left my (black) bottle in a hot car all day and while I could barely touch the outside, my water was still ice cold on the inside. Crazy, I know! At least one HydroFlask is a must have, but really you can never have enough.


    Nothing better

    • Familiarity:I've put it through the wringer

    Have you ever gone out with a bottle of hot chocolate, on a cold night and come back to ice cold chocolate milk? Well if you get the hydro flask you will always have that hot chocolate ready to warm you up when you get back. These bottles are amazing. They do keep your drinks hot / cold. For a long time! So if your thinking about getting one, get it!!

    Who doesn't need one?!

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

    "There are so many great things to say about Hydro Flask, but we could be here all night if we named all the reasons. Who doesnt need a Hydro Flask in every room of the house?! If you don't have one, buy one now. You wont regret it. I take mine everywhere with me. It does exactly what is says its supposed to do. It keep cold, cold and hot, hot. Not much to complain about here."

    The perfect commuter

    • Familiarity:I've put it through the wringer

    Everyone who's anyone knows that Hydroflask is amazing at keeping your water perfect all day...
    ...But I'm here to brag about its coffee keepin' abilities.
    It's been getting pretty cold here in Uhat on my bike commutes to work; and I'm stoked to not only have a thermos that'll keep my coffee hot, but that'll also fit perfectly into any standard water bottle cage!
    New favorite container for commuting, bikepacking, and camping in colder weather when hot coffee is a must!!

    hot and cold

    • Familiarity:I've put it through the wringer

    Pros:
    1. It keeps hot things hot and cold things cold for a long time. I have filled this bottle with hot tea at the house put the cap on and went to take a drink 6 hours later up skiing and it is still too hot to drink.
    2. It has a quality look and feel. The coating on the outside (mine is black) hasn't flaked off or scratched.
    3. This bottle is fairly dent resistant compared to other metal bottles I have had.

    Cons:
    1. If the cap is over tightened the treads on the inside of the bottle can strip out and cause it to leak. Mine was easily warrantied.
    2. The lack of a tether between the bottle and cap mean that gloved hands can easily drop it and leave you fumbling for it in the snow.

    Guys.. lets talk

    • Familiarity:I've put it through the wringer

    Simple.... keeps ice and water cold for 24 full hours and hot for 12. Awesome for soup or coffee!

    Best Best BEST part.. the lid is insulated as well. Yup. So you don't have to worry about any heat getting in or out of the lid. Not a lot of bottle companies do this. Very impressed yet again Hydroflask

    Had to buy more than one!

    • Familiarity:I've put it through the wringer

    I now have one of these in my gym bag and another that I keep at my desk. Water stays cold all day at work with a refill usually sometime in the middle of the day. The other one in my gym bag is awesome for staying hydrated while doing cardio or laying by the pool. Even in the blazing sun the ice is still there after several hours.

    BEST PURCHASE OF MY LIFE

    • Familiarity:I've put it through the wringer

    Hydro Flask is the best, hands down. I use mine daily... I own 4. I have gifted them to all of my friends and family. All of my coworkers now use them too. They are easy to clean, they keep things cold for days, no condensation and can withstand some serious abuse.

    Hydro flask water bottle

    By far the best bottle. Keeps water cold for at least 24 hours. I take it everywhere I go. Narrow enough to fit in a full backpack, it's perfect. Very light and durable. Would recommend it to anyone. Buy the hydro flask.

    Hydro flask water bottle