21 oz Standard Mouth w/ Sport Cap
$35.95
Regular Price $35.95

21 oz Standard Mouth w/ Sport Cap

21 oz Standard Mouth w/ Sport Cap is rated 4.3 out of 5 by 561.
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$35.95
Regular Price $35.95
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 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. 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

<h2>Hydration on the go.</span></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>

Hydration on the go.

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.

Hydration on the go
21 oz Standard Mouth Bottle w/ Sport Cap | Hydro Flask
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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 flavor 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.

Proprietary Powder Coat
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 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 our Standard Mouth Flex Cap
  • Lifetime Warranty
  • Sport Cap is not intended for use with hot liquids and is not leakproof

Size & Dimensions

21 oz
Volume 621 mL
Mouth Diameter 1.91"
Diameter 2.87"
Height 10.4"
Weight 11.3 oz
Technology
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Lifetime Warranty
Lifetime Warranty

We stand behind our products.

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

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

  • 122 Nonprofits supported nonprofits.
  • $1.9 million Dollars donated donated.
  • 55,958 Bottles donated bottles.
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Reviews
Rated 5 out of 5 by from a step above I bought 2 of these for my adult daughter and I. So happy I did, ice stays cold for more than 24 hours. Fits nicely in my car drink holder. The top is designed well and easy to grab with 1 finger and carry. I hesitated because it is a premium product which comes with a higher price but really the best thing for really ice cold water storage.
Date published: 2020-08-25
Rated 5 out of 5 by from Love the sport top, so easy to drink out of Couldn’t be more pleased , easy to drink and always cold
Date published: 2020-08-25
Rated 5 out of 5 by from Love the color and sport cap Perfect size for my daughters lunch box, keeps her water cold all day and the sport cap doesn’t leak and is super handy!
Date published: 2020-08-25
Rated 5 out of 5 by from The perfect bottle So happy with my purchase. Found my favorite color and it happened to be on sale. Keeps my drinks super cold and even when it’s all the way filled up it’s lightweight. Getting the sports cap was the cherry on top because i’m able to drink from it without taking the whole top off and i’m still able to carry it comfortably.
Date published: 2020-08-24
Rated 5 out of 5 by from Ice, ice, baby The ice can't melt in this thing! Makes a great gong noise when it bumps against things.
Date published: 2020-08-23
Rated 5 out of 5 by from Fantastic hydro flask This is an incredible bottle. Keeps water cold with just a little ice all day. Love love this water bottle. Worth every penny!
Date published: 2020-08-23
Rated 5 out of 5 by from Cold water—-finally! I bought my hydro flask about a month bag and I’m so happy with it. I’d tried other bottles that were supposed to keep water cold for long periods and was always disappointed. My hydro flask keeps my water cold all day long. I’m buying one for my daughter next!
Date published: 2020-08-21
Rated 5 out of 5 by from Awesome Love my hydro flask it’s a bright yellow and keeps my water icy.
Date published: 2020-08-20
Rated 5 out of 5 by from sooo pretty! i have gotten other hydro flasks in the past, but this one is by far the prettiest. ( I got it in the color frost)
Date published: 2020-08-19
Rated 5 out of 5 by from Stays cold I bike in the 90 and 100° heat of Phoenix in the summer. This bottle keeps water ice cold for hours at a time on my rides. I love it
Date published: 2020-08-16
Rated 5 out of 5 by from Great features I bought this a few weeks ago and I’m so happy I did
Date published: 2020-08-13
Rated 5 out of 5 by from Keep it cold Left inside car in a hot summer and keeps my water cold still.
Date published: 2020-08-09
Rated 5 out of 5 by from Cold Machine Keeps water cold, more so when flask is chilled before using. Silicone boot is nice for protection but makes bottom too large for many common drink holders.
Date published: 2020-08-05
Rated 5 out of 5 by from Hydro Flask 21 oz Standard Mouth w/ Sport Cap I bought a pair of these to use around the house and for bike riding. I haven't been riding lately but I do like how the bottles hold their temperature.
Date published: 2020-08-05
Rated 5 out of 5 by from Great item! I bought this two months ago and so glad I did! It’s great to use all day long.
Date published: 2020-08-04
Rated 5 out of 5 by from Love it so portable I thought I wouldn’t need it but once I got it I loved it so much, it’s also great for keeping cool and hot for sooooo long
Date published: 2020-08-02
Rated 5 out of 5 by from Love Love this for keeping my water cold......::::.....
Date published: 2020-08-02
Rated 5 out of 5 by from Perfect This one is the perfect size for keeping with you all day.
Date published: 2020-07-31
Rated 5 out of 5 by from Keeps ice for over 24 hours I bought this for my husband who is a bicyclist and does some 100 mile rides and he loves it
Date published: 2020-07-29
Rated 5 out of 5 by from BEST CAP cap is 10/10, i drink so much more water now because i love my bottle!! so sturdy and my ice lasts well over 24 hrs. will buy again.
Date published: 2020-07-28
Rated 5 out of 5 by from Love, Love, Love it! I bought my wonderful hydro flask in April and use it everyday for tennis and other sports. Great bottle, great colors! All my friends refused to get them because they thought they were to expensive, but I got one and convinced them to get one too. It is so worth the money. Hydro Flask's rock! - Amy and Mary
Date published: 2020-07-28
Rated 5 out of 5 by from Just the best ! I bought several hydro flasks for my granddaughters, they use them for their cheerleader practice. When we get home I wash them out . The liquid is always still in the e and cold, so I got one for myself. I just enjoy waking up during the night to having ice cold water to drink my medication. Planning on getting a drinking cup for use during the day!
Date published: 2020-07-24
Rated 5 out of 5 by from Keeps That Water Cold!! I bought this for my daughter’s birthday and she loves it. It keeps her water cold even through New England heatwaves. I’m also glad I ordered directly through Hydro Flask since I got it on sale and fast shipping!
Date published: 2020-07-23
Rated 5 out of 5 by from Replace all other drink vessels now This is my 3rd hydro flask, nothing will keep your beverage cold longer!
Date published: 2020-07-19
Rated 5 out of 5 by from Cold water! I bought this for my husband and he loves it. Keeps water super cold even in the texas heat.
Date published: 2020-07-19
Rated 5 out of 5 by from Love Loving the color of my hydroflask! Perfect size too.
Date published: 2020-07-18
Rated 5 out of 5 by from Love the color and the Sport Cap I bought this HydroFlask explicitly for the Sport Cap, as the twist cap for my other HydroFlask was incredibly tedious to take off and put back on while wearing boxing gloves. I can easily open the cap with my front teeth and drink much more easily than before. The color is also a lovely cornflower blue, a bit more pale and muted than in the photos. I would definitely recommend it!
Date published: 2020-07-17
Rated 5 out of 5 by from Love it! I ordered my first one a couple of months ago and couldn’t be happier. It’s great looking and keeps the contents cold for a really long time. I had bought three of them last Christmas as gifts for my family and they all commented on how great they were which lead to my getting one and have since bought 3 more but customized them for a more personal touch I.e. school colors. Just wish you had an emerald green color offering. Love them!
Date published: 2020-07-17
Rated 5 out of 5 by from HYFR My girlfriend got back with me, recommend to all the single guys out there
Date published: 2020-07-14
Rated 5 out of 5 by from Keeps my liquids cold all day The 21 oz is a great size and so lightweight. I want the larger size too.
Date published: 2020-07-13
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Questions

With the Sports cap, will it leak all over my backpack because of the air hole?

Asked by: eeortiz
If the cap is not shut completely or it is on its side it does have the potential to leak because there is an opening in the cap.
Answered by: Hydro Flask Customer Team
Date published: 2017-05-05

Is the color tangelo closer to a shade of orange or could it be closer to a coral pink like color?&nbsp;

Asked by: Mmmmmmayra
It is more of an orange than pink.
Answered by: Hydro Flask Customer Team
Date published: 2017-03-28

PLESE list size/dimensions of each one OR list ounces on the actual bottles. I am having a hard time figuring out which size I need a replacement for since I'm not near a way to measure ounces.

Asked by: peaceful warrior
Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
Answered by: Hydro Flask Customer Team
Date published: 2017-07-07

What kind of Impact makes this unsafe for drinking use? I See that its thick and made to withstand a certain amount of a blow, just wondering when I should toss and buy new.

Asked by: andrew09
There is really no impact that would make it unsafe as long as there is no damage to the steel where pieces are sticking out. You can use the flask as long as it works. Usually dents and dings do not affect the insulation of the flasks, but if it stops working the way it was intended you can contact us and we can do a warranty.
Answered by: Hydro Flask Customer Team
Date published: 2017-03-09

Do any of the bottles fit well in a bike cage?

Asked by: NurseAR
Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
Answered by: Hydro Flask Customer Team
Date published: 2017-12-26

Do you make a flask with a smaller diameter than the 21 oz.?

Asked by: Obie
Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
Answered by: Hydro Flask Customer Team
Date published: 2017-07-30

Are you going to be making the boots an accessory that you can buy separate for your bottle? I have a wide mouth bottle already that I'm happy with but would like a boot for added protection against dents but I do not want to have to buy a whole new flask

Asked by: MB03
At this time the boots are not available for individual sale. They are only available if you purchase a My Hydro.
Answered by: Hydro Flask Customer Team
Date published: 2017-02-27

Is the sports cap leak proof or will it drip if I tip it sideways?

Asked by: Lianna T
It does have a spout on it, so if it were open in the least it does have the potential to leak.
Answered by: Hydro Flask Customer Team
Date published: 2017-04-26

Is the sport cap with a straw so you can drink with the bottle flat on a table or do you have to tip the bottle to use it?

Asked by: dbeer
No, the sports cap does not have a straw. You would have to tip it.
Answered by: Hydro Flask Customer Team
Date published: 2017-02-27

Will either the 20 oz or 24 oz bottle fit inside a 'standard' bicycle water bottle holder?

Asked by: Suzzie
Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
Answered by: Hydro Flask Customer Team
Date published: 2017-12-26

My Grand daughter wants a 20 oz with a flip lid

Asked by: Junie
Look under the coffee section and that is where you will find the flask your grand daughter is looking for.
Answered by: Hydro Flask Customer Team
Date published: 2017-06-12

There is a new color, Raspberry, but i do not see it on the website. Please advise.

Asked by: hownow
Our new products are now showing on the website.
Answered by: Hydro Flask Customer Team
Date published: 2017-05-05

what about the 24 oz.bottles?

Asked by: Jewel
I am not completely sure what you are asking. You can call us at 888-584-9376 or email us at [email protected]
Answered by: Hydro Flask Customer Team
Date published: 2017-02-27

so I just want to buy a sports cap for my 21 oz grey hydro flask I bought during the summer, can I do that or do I have to buy another hydroflask to get the sports cap?

Asked by: de67w
You can go to the accessories tab on our website and you would be able to purchase just the sports cap.
Answered by: Hydro Flask Customer Team
Date published: 2017-02-27

Do you ever do custom logos? We would like our company logo on some.

Asked by: Ramona
We are unable to customize personal orders, but you&rsquo;re welcome to purchase flasks from our website and have them customized at any local trophy shop or screen printer in your area. We recommend purchasing a color flask, as the shop will engrave directly into the powder color coating on the outside. While having your flask engraved should not damage its ability to insulate or perform to our standards, please note that customizing the flask may result in voiding the lifetime warranty as we are not responsible for damages from aftermarket altercations. We appreciate your understanding of our policies.
Answered by: Hydro Flask Customer Team
Date published: 2017-06-12

will the vinegar and/or the baking soda help get the &quot;Coffee&quot; taste out of the Flask?

Asked by: Rainhaitertoo
That should take the taste or smell of the coffee out of the flask. A good one to use is take about a teaspoon of baking soda and some water to make a thick paste. Use a bristled bottle brush to scrub the entire flask thoroughly. Then fill the flask up with boiling water. Leave the cap off the flask. Allow the flask to soak in the baking soda/water mixture until the water inside the flask is cool to the touch. Finally wash and rinse the flask with dish soap and allow it to fully dry.
Answered by: Hydro Flask Customer Team
Date published: 2017-01-11

What is the best way to clean a hydro flask? &nbsp;do they sell a special brush?

Asked by: Netsfan
dish washing (ie. Cascade or Finish) soap tabs with boiling water helps remove any discoloration. I use a tab pour boiling water into flask, let it sit for 20-30 mins. Wash and rinse. Give it a try works great.
Answered by: Rainhaitertoo
Date published: 2018-12-28

I have 2 21 oz Standard Mouth w/ Sport Cap. What's the best way to clean the Sports Cap??

Asked by: jle1944
*You shouldn&rsquo;t:* Soak or put the Flex Cap, Wide Flat Cap, Stainless Steel Flat Cap or Loop Caps through the dishwasher: The Flex Cap, Wide Flat Cap, Stainless Steel Flat Cap, Standard Loop Cap and Narrow Loop Cap can take on water when they are run through the dishwasher or submerged in water for an extended time. Instead, we recommend hand washing them with hot, soapy water, rinsing and allowing them to dry.
Answered by: Hydro Flask Customer Team
Date published: 2017-01-11

Hello, &nbsp; I wanted to know if there is a bulk price for an order with a custom logo? &nbsp; over 200 bottles if that helps for a quote

Asked by: Chris522
At this time we do not offer any engraving services for personal or corporate orders. We suggest reaching out to trophy or engraving shops for a quote! Unfortunately, we do not have a bulk purchase program at this time, but we are currently offering free shipping on orders of two or more flasks on our website.
Answered by: Hydro Flask Customer Team
Date published: 2016-12-31

Is pink no longer available?

Asked by: pablo
At this time we are not making the Pinkadelic Pink color. Product colors are based on consumer feedback. I will forward your suggestion over to our product development team.
Answered by: Hydro Flask Customer Team
Date published: 2016-12-14

Is the bottle with the sports cap, leakproof?

Asked by: Bob1
In the closed position, the sports cap would be leak proof.
Answered by: Hydro Flask Customer Team
Date published: 2017-01-09

Can ice fit easily through the mouth of this bottle?

Asked by: Savvy
You should be able to fit ice through the standard mouth easily.
Answered by: Hydro Flask Customer Team
Date published: 2016-12-09

What is the diameter of this bottle? I'm trying to find an appropriate holder for my motorcycle. I know falls can be harmful to the flask but I need it accessible when working. Thanks

Asked by: Bjc1982
Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
Answered by: Hydro Flask Customer Team
Date published: 2017-07-30

What is the height of the standard mouth 21oz &amp; 24oz bottles?

Asked by: Sam70
Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
Answered by: Hydro Flask Customer Team
Date published: 2016-10-26

Will these bottles (21 oz standard mouth with sport cap) fit a standard size water bottle cage?

Asked by: Holly19
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: Hydro Flask Customer Team
Date published: 2016-11-20

Is the sports cap safe to use with hot coffee?

Asked by: swimmer
If you would like to use a flask with hot beverages, we would suggest using one of our Coffee Flasks.
Answered by: Hydro Flask Customer Team
Date published: 2016-10-19

If I send you my logo can you print it on the bottle and what's the cost per logo?

Asked by: Stanton
At this time we are not offering custom engraving for personal orders.
Answered by: Hydro Flask Customer Team
Date published: 2016-09-27

Does this bottle fit in a vehicle cup holder?

Asked by: Stcroix
The Standard Mouth Flasks should fit in most standard size cup holders.
Answered by: Hydro Flask Customer Team
Date published: 2017-01-05

would it be possible to do custom waterbottles?

Asked by: NicoSantos
We are currently only offering customization to current accounts.
Answered by: Hydro Flask Customer Team
Date published: 2016-09-15

Where are your products manufactured?

Asked by: Professor
Our products are manufactured in China.
Answered by: Hydro Flask Customer Team
Date published: 2016-09-15
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Hydro Flask supports non-profit organizations focused on building, maintaining, restoring, and providing better access to parks. Since 2017, we have been doing just that:

  • 122 Nonprofits supported nonprofits.
  • $1.9 million Dollars donated donated.
  • 55,958 Bottles donated bottles.
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