Free shipping on 2+ Hydro Flasks and Coolers always ship free!
Menu
183,456 unique combinations

Bottles

21 oz Standard Mouth

$32.95
Gallery Image 4238
Gallery Image 1987
Gallery Image 4650
Gallery Image 4238
Gallery Image 1987
Gallery Image 4650

Bottles

21 oz Standard Mouth

$32.95
Lifetime
  • Flex Cap
    Flex Cap
    Included
  • Sport Cap - +$6.00
    Sport Cap
     
$32.95
Quantity

Customize Purchase via Dealer

Similar Bottles Products

Sale discount on this color will be automatically applied in cart.

Your perfect travel companion.

Keep life moving with our 21 oz bottle and Standard Flex Cap. It stashes easily into a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough ice cold goodness to keep you going for hours without weighing you down. No wonder it's one of our bestselling water bottles.

21 oz Standard Mouth Lifestyle Image

TempShield™

Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.

TempShield

Pro-Grade Stainless Steel

Made with 18/8 pro-grade stainless steel to ensure pure taste and no flavor transfer - and the durable construction stands up for whatever life brings.

Pro-Grade Stainless Steel

Proprietary Powder Coat

Our proprietary powder coat means an easy-grip, sweat-free, and extra-durable bottle that you can take anywhere.

Cold Flow System
  • Lifetime Warranty

    Lifetime Warranty

    We stand behind our products.

    Hydro Flask guarantees this Hydro Flask product with a limited lifetime warranty against manufacturer defects.

Product Benefits

  • Versatile, middle-of-the-road size
  • TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
  • Durable 18/8 Pro-Grade Stainless Steel construction
  • BPA-Free and Phthalate-Free
  • Compatible with Standard Mouth Insulated Sport Cap
  • Lifetime Warranty

Size & Dimensions

21 oz
Volume 621 mL
Mouth Diameter 1.91"
Diameter 2.87"
Height 9.4"
Weight 11.3 oz

TempShield™

Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.

TempShield

Pro-Grade Stainless Steel

Made with 18/8 pro-grade stainless steel to ensure pure taste and no flavor transfer - and the durable construction stands up for whatever life brings.

Pro-Grade Stainless Steel

Proprietary Powder Coat

Our proprietary powder coat means an easy-grip, sweat-free, and extra-durable bottle that you can take anywhere.

Cold Flow System
  • Lifetime Warranty Icon
    Lifetime Warranty
    • Lifetime Warranty

      Lifetime Warranty

      We stand behind our products.

      Hydro Flask guarantees this Hydro Flask product with a limited lifetime warranty against manufacturer defects.

    Details & Specs

    Product Benefits

    • Versatile, middle-of-the-road size
    • TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
    • Durable 18/8 Pro-Grade Stainless Steel construction
    • BPA-Free and Phthalate-Free
    • Compatible with Standard Mouth Insulated Sport Cap
    • Lifetime Warranty

    Size & Dimensions

    21 oz
    Volume 621 mL
    Mouth Diameter 1.91"
    Diameter 2.87"
    Height 9.4"
    Weight 11.3 oz

    Video

    21 oz Standard Mouth Promo Video
    Play Video Button

    Reviews/Q&A

    • Reviews

    • Q & A

    • 21 oz Standard Mouth is rated 4.7 out of 5 by 645.
      Rated 5 out of 5 by from Love it! I am so happy I decided to purchase this product. It is fashionable and easy to carry and most important it keep my drinks cold.
      Date published: 2019-12-29
      Rated 5 out of 5 by from Love the vibrant colors I have had this for a week it is great! It keeps your drink cold.
      Date published: 2019-12-26
      Rated 5 out of 5 by from wow such a reliable water i think this water bottle i amazing and i totally recommend it for you but here is a quick note the top is the most sensitive part
      Date published: 2019-12-26
      Rated 5 out of 5 by from Keeps drinks cold I left my drink in it all night and I woke up and my drink was cold still
      Date published: 2019-12-24
      Rated 5 out of 5 by from Great Product! Definitely recommend the top with the nozzle on it. Overall great product.
      Date published: 2019-12-21
      Rated 5 out of 5 by from Its durable I got this for my my 12th birthday and i loved it i got it in ice blue i recamend this and its a fordable
      Date published: 2019-12-20
      Rated 5 out of 5 by from My go-to bike bottle I’ve had this bottle for a couple years now I use it on my bike winter and summer. Prior to this I tried plastic (awful taste & warm water after an hour or so) and then I tried stainless uninsulated (better, but still didn’t hold the cold). I finally bit the bullet and sprung for this nifty, red bottle. I love it! It fits my bottle cage perfectly and looks great against the silver frame on my bike. It keeps the water cold even in 90° weather, sometimes even into the next day if I forget to refill. At first I was disappointed that the powder coat became scuffed and in some spots even worn away. But I came to realize that no finish could hold up to the abrasion from a bike bottle cage, so this has become my dedicated bike bottle. It looks like it’s been through the wars, but I wouldn’t give it up! Since then I bought another black one that I use in the car and for walking around. And just recently acquired a third just because. I would not hesitate to recommend these to anyone. I also picked up the 10 oz rocks tumbler with an insulated lid. Keeps my coffee hot for a crazy long time!
      Date published: 2019-12-17
      Rated 5 out of 5 by from Perfect for everyday use! I bought this around a month ago and have used it everyday since. It's the perfect size for fitting in a backpack's bottle holder, and isn't too bulky. Keeps drinks cold all day! The bottle also doesn't dent as easily as other bottles.
      Date published: 2019-12-14
      Rated 5 out of 5 by from Love it Perfect size, vibrant color, Ive never drank this much water before and i know it’s because I have my pretty hydro flask in my hand all the time now.
      Date published: 2019-12-11
      Rated 5 out of 5 by from Love it Glad I bought this water bottle, it keeps my drink cold for a day at a time
      Date published: 2019-12-10
      Rated 5 out of 5 by from Great Product, but beware of Cobalt color I LOVE Hydro Flasks, don't get me wrong. However, I recently ordered a Cobalt Blue 24 inch standard mouth expecting the blue to be darker just like in the picture, but when it arrived in the mail the blue was a way lighter and in my opinion not as pretty. If you go to the Cobalt blue on any of the widemouth products you will see the true blue color. Wish I knew this before ordering.
      Date published: 2019-12-04
      Rated 5 out of 5 by from Great bottle Just bought mine today. I filled it up with boiling hot water to soak away any chemicals from the production process. To my surprise, the bottle doesn't even feel warm from outside. What that shows is how amazing the vacuum insulation is!
      Date published: 2019-11-30
      Rated 5 out of 5 by from Goes everywhere I go It just works. Every plastic bottle I don’t have to buy now is just one tiny way of helping to save the planet. Water stays cold all day. Or hot if you like. Built to last, a great way to stay hydrated all day.
      Date published: 2019-11-18
      Rated 5 out of 5 by from Great and pretty bottle the bottles keep the water cold until next day added that they have a very pretty look, very irresistible for a teenager girl!
      Date published: 2019-11-11
      Rated 5 out of 5 by from Buy it’s great buy buy buy buy buy it because it’s such a great bottle
      Date published: 2019-11-07
      Rated 5 out of 5 by from Great Features! I have like 10 and I can’t get enough GREAT QUALITY AND BEAUTIFUL COLORS
      Date published: 2019-10-28
      Rated 5 out of 5 by from Luv Luv Luv my Jade Hydroflask Luv it Can’t wait to order more! ❤️❤️❤️❤️❤️❤️❤️❤️
      Date published: 2019-10-24
      Rated 5 out of 5 by from Wide mouth is the perfect diameter. I bought a HydroFlask for my girlfriend and me about a month ago. We love the colors we chose, and I just took mine to New York on vacation! I'll never be without one!
      Date published: 2019-10-22
      Rated 5 out of 5 by from never loved another water bottle quite like this Bought a couple weeks ago and has quickly become something I can’t live without, it goes everywhere with me. Water stays insanely cold and the ice literally never melts. I could put ice in there and it would still be there 24 hours later. Not enough good things to say about this. It’s super durable, I’ve already dropped it a bunch because I’m a butter fingers. But yeah I love this thing
      Date published: 2019-10-21
      Rated 5 out of 5 by from Amazing durability. I bought this a few weeks ago and can honestly say I love it so much. Water stays chilled all day long. The exterior durability is fantastic and has survived serval drops.
      Date published: 2019-10-09
      • y_2020, m_1, d_3, h_13
      • bvseo_bulk, prod_bvrr, vn_bulk_3.0.4
      • cp_1, bvpage1
      • co_hasreviews, tv_0, tr_645
      • loc_en_US, sid_S21SX, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
      • clientName_hydro-flask
      • bvseo_sdk, p_sdk, 3.2.1
      • CLOUD, getContent, 19.54ms
      • REVIEWS, PRODUCT

    • Where is this bottle manufactured?

      Asked by: j1234
      Manufactured in China but shipping from Southaven, MS.
      Answered by: Consumer Service
      Date published: 2019-12-30

      Is there a cap available for purchase that would allow me to use my standard mouth Hydro Flask 21oz with hot drinks? I purchased 2 hoping to use one for hot and the other for cold. However I have not been able to use hot drinks due to the cap. Frustrated

      Asked by: Limey
      We currently have two caps for the standard mouth flasks. We have the sports cap and the flex cap.
      Answered by: Consumer Service
      Date published: 2019-11-03

      The jade color was available yesterday, but is not now. Will it be available again?

      Asked by: Lindsayb
      I apologize for the issue you are having. Please contact customer service at 888-584-9376 to discuss this further.
      Answered by: Consumer Service
      Date published: 2019-10-29

      Can big pieces of ice fit in the standard mouth cap

      Asked by: unknown123456
      The mouth diameter is 1.91 inches. Ice cubes smaller than this will fit.
      Answered by: Consumer Service
      Date published: 2019-10-29

      how do i add this to my wishlist?

      Asked by: maroonscrunchie8
      Unfortunately, our website does not have an option to add to a wish list.
      Answered by: Consumer Service
      Date published: 2019-10-29

      Can I use the bottle to keep milk cold? I know some metals are not recommended to be in contact with milk.

      Asked by: Jsyd
      Yes, milk should be fine! We would just suggest taking extra care with cleaning after putting anything besides water in the flask.
      Answered by: Consumer Service
      Date published: 2019-10-28

      If I order 10 bottles, can a logo be imprinted on them?

      Asked by: Sandy33
      No. We recommend that you take them to a local engraver of your choosing.
      Answered by: Consumer Service
      Date published: 2019-10-27

      Are any of the water bottles dishwasher safe? 

      Asked by: SEO1
      no they are hand wash only
      Answered by: karen452
      Date published: 2019-07-02
      • y_2020, m_1, d_3, h_13CST
      • bvseo_bulk, prod_bvqa, vn_bulk_3.0.4
      • cp_1, bvpage1
      • co_hasquestionsanswers, tq_88
      • loc_en_US, sid_S21SX, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
      • clientName_hydro-flask
      • bvseo_sdk, p_sdk, 3.2.1
      • CLOUD, getContent, 19.01ms
      • QUESTIONS, PRODUCT

    Product Tags

    Use spaces to separate tags. Use single quotes (') for phrases.

    Stay in touch!

    Company

    Support

    Go to Hydroflask.com
    525 NW York Drive Bend, Oregon 97703
    © Hydro Flask. All prices are in USD. Terms & Privacy
    Jump To Top

    Size and Fit Chart

    Close
    Hydro Flask Pack Size Chart
    Available SizesS / MM / L
    Torso
    Measurement    		 18 - 19 in
    43 - 48 cm    		 19 - 22 in
    48 - 56 cm
    Hip
    Measurement    		 22 – 46 in
    56 – 117 cm    		 26 – 46 in
    66 – 117 cm

    1. Torso Measurement

      • Bring your chin to your chest and feel for the most prominent bony bump where the slope of your shoulders meets the back of your neck. This is your C7 vertebra, and the top of your torso measurement.

      • On each side of your body, feel for the top of your hip bones, just below the sides of your ribs. With fingers pointing forward and thumbs pointing backward, draw an imaginary line between your thumbs. This is the bottom of your torso measurement.

      • Stand up straight and have a friend with flexible measuring tape measure the distance between your C7 vertebra and the imaginary line between your thumbs. That’s your torso measurement. If you are between pack sizes, go with the smaller size.

    2. Hip Measurement

      While your torso measurement is the best indicator of your pack size, it’s still important to check your hip size when using a hipbelt. To find your hip measurement, wrap a flexible tape measure around the top of your hip bones, just below the sides of your ribs. This measurement is slightly higher than your waistline