Bottles

21 oz Standard Mouth w/ Sport Cap

$35.95
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Bottles

21 oz Standard Mouth w/ Sport Cap

$35.95


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

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

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, 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

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.

Details & Specs

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

Video

Reviews/Q&A

  • Reviews

  • Q & A

  • 21 oz Standard Mouth w/ Sport Cap is rated 4.5 out of 5 by 355.
    Rated 5 out of 5 by from Very Nice This really improved my vsco girl status. I only had scrunchies and sksksk a lot but the hydroflask really just put the concept together
    Date published: 2019-09-20
    Rated 5 out of 5 by from Amazing Bought one a while back , love how cold/hot it keeps my water
    Date published: 2019-09-20
    Rated 5 out of 5 by from Great quality I bought one a while back and had to get my toddler one they are such great quality
    Date published: 2019-09-19
    Rated 5 out of 5 by from awesome i bought this, so happy with it. awesome totally totally awesome
    Date published: 2019-09-19
    Rated 5 out of 5 by from amazing quality? i bought another one and little bit ago and i has it all the time. it keeps my drinks nice and cool and i highly recommend it!
    Date published: 2019-09-19
    Rated 5 out of 5 by from Durability I have dropped this thing sooooo many times, yet it is still in one piece and pretty!!
    Date published: 2019-09-19
    Rated 5 out of 5 by from Great quality I’ve been wanting to buy a hydro flask for long I finally got one ! I’d recommend:)!
    Date published: 2019-09-19
    Rated 5 out of 5 by from YEP I love it so much and I literally take it every we’re
    Date published: 2019-09-19
    Rated 5 out of 5 by from great to keep drinks cold i really love these so much. i never wanted to purchase one because i felt like everyone had one but i’m glad i did. never leave without it
    Date published: 2019-09-19
    Rated 5 out of 5 by from Excellent Cap I bought this the other week and I have no regrets! Definitely recommend if you have long outdoor sporting events, like softball/baseball, soccer or football.
    Date published: 2019-09-19
    Rated 5 out of 5 by from great looks! i love how you made them and how they’re trending :)
    Date published: 2019-09-19
    Rated 5 out of 5 by from A Great Bottle I have this bottle and it is worth it. It keeps my drinks cool and it is a cute bottle. I would recommend this to my family and friends and already have and they love it as well. Overall a Great bottle.
    Date published: 2019-09-18
    Rated 5 out of 5 by from Great colors and features I bought this 2 weeks ago and it great it keeps my water cold all day!!!!!
    Date published: 2019-09-18
    Rated 5 out of 5 by from Love it!! I have had a hydro flask for quite some time now and I’m absolutely in love! It keeps my water cool and it’s so stylish! Thank you for making a great product!
    Date published: 2019-09-18
    Rated 5 out of 5 by from Chilling Stays cold for hours even when left in a hot car!!
    Date published: 2019-09-18
    Rated 5 out of 5 by from amazing keeps drink cool really good for hiking. matches my fave scrunchy
    Date published: 2019-09-18
    Rated 5 out of 5 by from stays cold or hot up to log periods of time i love the product so efficient and easy my kids love the product for school as well thought about buying me one
    Date published: 2019-09-18
    Rated 5 out of 5 by from Cute Colors Great to keep water cool. Good to take on a hike or run.
    Date published: 2019-09-17
    Rated 5 out of 5 by from Great features I bought this because I heard so many great recommendations about them. When I got my own I fell in love with it’s convenience and how it kept my water perfectly cold. Also the colors are so cute.
    Date published: 2019-09-17
    Rated 5 out of 5 by from Save the turtles Yeah this is the best water bottle I’ve gotten and is super insulated
    Date published: 2019-09-17
    Rated 5 out of 5 by from perfect drinking size! not too much or too little! I just got this a few weeks ago and I love it! so cute and handy.
    Date published: 2019-09-17
    Rated 5 out of 5 by from Love the hydro I been using my hydroflask for months and I love it
    Date published: 2019-09-17
    Rated 5 out of 5 by from YEP i love it so much and i literally take it everywhere
    Date published: 2019-09-17
    Rated 5 out of 5 by from love these bottles I bought this a month ago and I take it everywhere. The size is perfect i can take it to school and it doesn't weigh at all. i would definitely get this water bottle it is very easy to carry. im in love with this waterbottle.
    Date published: 2019-09-17
    Rated 5 out of 5 by from Hydro flask It is the best water bottle to keep your drink cold
    Date published: 2019-09-17
    Rated 5 out of 5 by from Love this!! I bought this about a few weeks ago and am so happy I did.
    Date published: 2019-09-17
    Rated 5 out of 5 by from YEP I love it so much and I LITERALLY TAKE IT EVERYWHERE!!!
    Date published: 2019-09-16
    Rated 5 out of 5 by from Amazing! Really good water bottle! Really insulated, very nice, heckin good
    Date published: 2019-09-16
    Rated 5 out of 5 by from Love the cap I’m sooo happy with this would get more would recommend to anyone
    Date published: 2019-09-16
    Rated 5 out of 5 by from Beautiful Evebody loves a good hydro flask they sporty cute and useful. I have been alot more hydrated since my last purchase and would 100% recommend sksksk
    Date published: 2019-09-16
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  • 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’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 "Coffee" 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?  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’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,   I wanted to know if there is a bulk price for an order with a custom logo?   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 & 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

    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

    how does the sports cap open?

    Asked by: Bernie

    Do you have a flip cap for small mouth bottle?

    Asked by: al 65

    Is this dishwasher safe? 

    Asked by: Drewski8888
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