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Hydration
21 oz (621 ml) Standard Mouth with Sport Cap
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Hydration

21 oz (621 ml) Standard Mouth with Sport Cap

21 oz Standard Mouth w/ Sport Cap is rated 4.3 out of 5 by 816.
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Size Chart
Hydro Flask Pack Size Chart
Available Sizes S/M M/L
Torso
Measurement		 18 - 19 in 19 - 22 in
43 - 48 cm 48 - 56 cm
Hip
Measurement		 22 – 46 in 26 – 46 in
56 – 117 cm 66 – 117 cm

  1. 1. Torso Measurement

    • A. 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.

    • B. 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.

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

  2. 2. Hip Measurement

    Although 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

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<div class="description-pdp-content-text"> <h2>Hydration on the go.</h2> <p>They're pretty much the perfect pair—our 21 oz Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. It stashes easily in a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough to keep you going for hours without weighing you down. </p></div>

Hydration on the go

They're pretty much the perfect pair: our 21 oz (621 ml) Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. It stashes easily in a small shoulder bag, your pack’s side pocket or your car cup holder, and holds enough to keep you going for hours without weighing you down.

21 oz (621 ml) Standard Mouth with Sport Cap Lifestyle Image
21 oz Standard Mouth Bottle with Sport Cap | Hydro Flask
Product image
Features
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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

Pro-Grade Stainless Steel

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

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
Details
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Product Benefits

  • Versatile, middle-of-the-road size, equipped with our insulated Sport Cap
  • TempShield™ insulation eliminates condensation and keeps beverages cold for up to 24 hours and hot for up to 12 hours
  • Durable 18/8 Pro-Grade Stainless Steel construction
  • BPA-Free and Phthalate-Free
  • Compatible with our Standard Mouth Flex Cap
  • Lifetime Warranty
  • Sport Cap is not intended for use with hot liquids and is not leakproof

Size and Dimensions

21 oz (621 ml)
Volume 621 ml
Mouth Diameter 4,9 cm
Diameter 7,3 cm
Height 10.4"
Weight 11.3 oz (320 g)
Technology
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We have great faith in our products

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

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Hydro Flask supports non-profit organisations focusing on building, maintaining, restoring and providing better access to parks. Since 2017, we have been doing just that:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars (approx. £1.197 million) donated donated.
  • 26,043 Bottles donated bottles.
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Reviews
Rated 5 out of 5 by from Great! Stays cold all day , sport top is great , doesn’t leak when closed
Date published: 2022-04-04
Rated 5 out of 5 by from Just what I needed It’s the perfect size, looks great, washes well. I switch between the sports cap and the twist on depending on where I’m using it.
Date published: 2022-04-02
Rated 5 out of 5 by from Best water bottle ever I love the color and even though I’ve dropped it multiple times it barley scratches! It keeps everything cool and there’s no nasty plastic taste. Love it!!
Date published: 2022-03-23
Rated 5 out of 5 by from Perfect for travel Size is perfect for traveling and refilling at the airport and fits in my backpack water bottle sleeve
Date published: 2022-03-22
Rated 5 out of 5 by from Great for travel Make sure the cap is closed or it will spill in your bag lol. Great so far. It fits nicely in my backpack I use for traveling which is what I bought it for
Date published: 2022-03-17
Rated 5 out of 5 by from Perfect sport bottle My son likes this sports bottle and I like the cap.
Date published: 2022-03-08
Rated 5 out of 5 by from I love this! This is the first Hydro Flask I’ve bought. I love it and it will be great for being outside this summer!
Date published: 2022-03-06
Rated 5 out of 5 by from Perfect for any on the go drinks I used this one for my mixed drinks on the cruise and it stayed chilled
Date published: 2022-02-13
Rated 5 out of 5 by from Beautiful color, durable,excellent warranty. Excellent quality ALWAYS. Worth the price. Its a great investment.
Date published: 2022-02-13
Rated 5 out of 5 by from Love Love this color and love hydro flask. I have many, but am really loving this one for winter
Date published: 2022-02-12
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Questions

Will this bottle fit in a bicycle holder?

Asked by: paodrea
We regret to inform you that our products are not specifically designed to be carried in bike cages and they have not been tested for such use. We would be concerned about the possibility of the cage causing scratches, chips, and dents to your flask from improper fit and jostling. Therefore, we do not recommend carrying Hydro Flask products in bike cages.
Answered by: Consumer Service
Date published: 2022-05-05

Are your bottles and lids dishwasher safe? What are the diameters of the standard and wide mouths?

Asked by: Poochie
No, however the bottles on our site currently are all dishwasher safe. The wide mouth diameter is 3.58 inches and the standard mouths are 2.81 inches.
Answered by: Consumer Service
Date published: 2021-05-19

Is this the hydro flask 2.0?

Asked by: aubz
Yes
Answered by: Consumer Service
Date published: 2020-11-11

When is the frost 21oz standard mouth bottle coming again. Is it going to be on sale again when it comes out.&nbsp;

Asked by: Andrea0412
Hello, I do apologize for the longer response time! We are not able to ensure if or when a color will come back!
Answered by: Consumer Service
Date published: 2020-11-05

So I have been wanting to buy I hydro flask for I really long time. So my dad told me I could buy one I like the 21 oz standard mouth bottle w/ sport cap l Hydro flask. So this is my question does the hydro flask 21 oz come with the sport cap or no lid.&nbsp;

Asked by: Andrea0412
Hello, I do apologize for the longer response time! You would want to make sure you select the correct bottle on the website. They do have the option to include the sports cap!
Answered by: Consumer Service
Date published: 2021-12-13

Does this bottle fit in most car cup holders?

Asked by: AC3215
Hello, I do apologize for the longer response time! Yes, the standard bottles tend to fit more in the standard size cupholder!
Answered by: Consumer Service
Date published: 2020-12-13

Per your answer on china vs USA manufacturing which lids are made in the USA?

Asked by: Randomman
All of our products are manufactured in China, but distributed from our US warehouse.
Answered by: Consumer Service
Date published: 2020-11-05

Are all Hydro Flasks dishwasher safe?

Asked by: mama P
No, only the new 2.0 bottles are dishwasher safe. You can reach out to us at 888-584-9376 to determine if your bottle is dishwasher safe or not.
Answered by: Consumer Service
Date published: 2020-08-27
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Hydro Flask supports non-profit organisations focusing on building, maintaining, restoring and providing better access to parks. Since 2017, we have been doing just that:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars (approx. £1.197 million) donated donated.
  • 26,043 Bottles donated bottles.
You May Also Like
  1. Standard Mouth Flex Straw Cap
    Square - 600x600
    Colours Available
    Out of stock