21 oz Standard Mouth w/ Sport Cap
$26.96
Regular Price $35.95

21 oz Standard Mouth w/ Sport Cap

21 oz Standard Mouth w/ Sport Cap is rated 4.4 out of 5 by 512.
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$26.96
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.

21 oz Standard Mouth w/ Sport Cap Lifestyle Image
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.

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 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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Today is wide open. You lead, we'll follow.

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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:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars donated donated.
  • 26,043 Bottles donated bottles.
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Reviews
Rated 5 out of 5 by from Great! I am so so happy that I finally joined the hydroflask gang! It’s amazing how long my water stays ice cold
Date published: 2020-07-04
Rated 5 out of 5 by from Love Hydro Flask I have purchased five Hydro Flask bottles and they are great for keeping drinks cool even in the hottest weather. Fantastic product.
Date published: 2020-07-04
Rated 5 out of 5 by from Durable I bought it during your sale and I love it. I just wish you deal with fedex regarding delivery.
Date published: 2020-06-28
Rated 5 out of 5 by from Cold !!! Ira great for keeping the body cool and the mind calm during the 100+ degrees in Arizona.
Date published: 2020-06-27
Rated 5 out of 5 by from Good deal & works great The flask has worked fine to carry water when golfing. Stays cool for quite a while. The only problem has been that I filled it and tossed it in the passenger seat to drive to golf. I accidentally left the sport nozzle partially open and emptied about 10oz. Into the seat on the way to the course. Otherwise it works great, just like my other HydroFlask.
Date published: 2020-06-24
Rated 5 out of 5 by from Amazing Product I bought this for my 4 1/2 year old and its perfect! She actually broke the lid and the customer service was absolutely amazing. They sent 2 replacement lids in less than a week!
Date published: 2020-06-22
Rated 5 out of 5 by from Great Quality I bought this about a month ago for a good price my water stays cool. The quality overall is great.
Date published: 2020-06-22
Rated 5 out of 5 by from Such a good bottle ! I bought this early may and I’ve been using it non stop. It is really good for sports and very easy to use when pulling up the cap to drink!
Date published: 2020-06-22
Rated 5 out of 5 by from Love this style! I bought this for my daughter and the sport top is perfect for her to carry around and keep her drink sealed and cool. She uses it daily and takes it everywhere, her drink stays cool even when left in the hot car while we run into a store. Would definitely purchase again!
Date published: 2020-06-19
Rated 5 out of 5 by from Love the cap! I used to have a straw cap for my other hydros, but the sports cap is so much easier to use!
Date published: 2020-06-16
Rated 5 out of 5 by from Love Great color and product. Nice built in handle. Can't go wrong with a Hydro.
Date published: 2020-06-15
Rated 5 out of 5 by from Love it...as always! I bought this for my post-pandemic return to the office, since I planned to start with something new and clean. Unfortunately, we are not allowed to bring in personal water bottles into the office ...yet. I will keep it safe until then!
Date published: 2020-06-14
Rated 5 out of 5 by from Best thing I bought it a month ago for both granddaughters they love them
Date published: 2020-06-13
Rated 5 out of 5 by from Love this style !! I have a number of other Hydroflasks but I was interested in this style so that I can have cold water after finishing a run (that I had to drive to so I wanted to be able to leave this in the car). It is great and keeps the water cold for hours — love it !!
Date published: 2020-06-12
Rated 5 out of 5 by from Great!! I bought this a couple of months ago and it has been amazing!!! The water stays cold for hours even out in the southern summer heat!! I didn’t think I’d like the sport cap, but I grew to love it, I can leave it open and get a swig whenever I need it rather than having to open it every single time I want a sip.
Date published: 2020-06-11
Rated 5 out of 5 by from Loves it Perfect no spills my husband loves it ! Such a pretty blue I want to take it for me
Date published: 2020-06-09
Rated 5 out of 5 by from Love, Love this bottle I love this size of this bottle and the sports cap it comes with. Keeps my water cold all day long. Highly recommend.
Date published: 2020-06-09
Rated 5 out of 5 by from Keeps water cool with ice cubes! ive been adding ice cubes to my water around 8pm and wake up at 9am and it still has the icecubes in :)
Date published: 2020-06-08
Rated 5 out of 5 by from Love it! I haven't had my Hydro Flask for long but I already think it's great. It's just the right size to take on short hikes, or to work,or just sitting around the house. The lemon color is so cheery too! The handle makes it easy to take wherever I go.
Date published: 2020-06-07
Rated 5 out of 5 by from Customer services made me a repeat buyer We received a damaged item and a customer service rep (Cheryl) was proactive and thoughtful in correcting the issue. Based on service alone, I will happily purchase more products from hydroflask in the future.
Date published: 2020-06-03
Rated 5 out of 5 by from Love Drinking more water and love that it stays cold all day.
Date published: 2020-06-01
Rated 5 out of 5 by from Perfect My daughter wanted this. I love this lid. Easy and don’t have to take it off to drink. Good color and keep her water cold!
Date published: 2020-06-01
Rated 5 out of 5 by from Great color I bought this for a friend and she absolutely loved it. The color, size, quality and sports cap suited her perfectly.
Date published: 2020-06-01
Rated 5 out of 5 by from Great My daughters favorite !!!its her birthday gift she is loving it a lot
Date published: 2020-05-31
Rated 5 out of 5 by from very pretty quick, and easy transaction. just what i ordered love it
Date published: 2020-05-28
Rated 5 out of 5 by from Family loves their HydroFlasks Great gifts for teenage kids on the go. Keeps beverages very cold even while the hydroflask is sitting in a hot car.
Date published: 2020-05-24
Rated 5 out of 5 by from Best bottle Great for work. 12 hour shifts ice will last the whole day. Amazing bottle
Date published: 2020-05-22
Rated 5 out of 5 by from Amazing!!! I am so happy that I got this! The color is so cute.
Date published: 2020-05-22
Rated 5 out of 5 by from My FAVORITE Hydroflask! :) Ever since I was turned on to Hydroflasks (3ish yrs ago) - I have replaced ALL my drinking vessels with hydroflasks. Love them! But this new watermelon, 21oz, with boot and sport cap is my all time favorite!
Date published: 2020-05-22
Rated 5 out of 5 by from The only water bottle you need! Bought as a gift and was well received. They loved the color and how it keeps beverages cold. I like the sport top, easy to drink at soccer practice!
Date published: 2020-05-21
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Questions

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

Is it dishwasher safe?

Asked by: scottsdale
No. Putting your flask in the dishwasher can compromise the insulation.
Answered by: Hydro Flask Customer Team
Date published: 2017-01-27

Will this bottle fit into a standard bottle cage on a bicycle?

Asked by: susi
We do not recommend putting your Hydro Flask in a bike cage, as falls from a bike could cause damage to the powder coat finish or cause denting.
Answered by: Hydro Flask Customer Team
Date published: 2017-01-27

Does this bottle fit in most car cup holders?

Asked by: AC3215

Hi there, my company is thinking about ordering water bottles as a company gift, can we imprint company logos onto the water bottles? Thanks!

Asked by: Rozet

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
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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:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars donated donated.
  • 26,043 Bottles donated bottles.
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