Bottles

21 oz Standard Mouth w/ Sport Cap

$35.95
21 oz Standard Mouth w/ Sport Cap

Bottles

21 oz Standard Mouth w/ Sport Cap

$35.95

Lifetime

  • Sport Cap
    Sport Cap
    Included
  • Flex Cap - -$6.00
    Flex Cap
     
$35.95

Quantity

Purchase via Dealer

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

Overview

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.

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

    Tempshield

    Colder. Hotter. Longer.

    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.

  • Proprietary Powder Coat

    Proprietary Powder Coat

    Comfortable and durable.

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

  • BPA-Free

    BPA-Free

    Sip and enjoy.

    Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.

  • 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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Overview & Specs

Overview

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.

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

  • TempShield

    Tempshield

    Colder. Hotter. Longer.

    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.

  • Proprietary Powder Coat

    Proprietary Powder Coat

    Comfortable and durable.

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

  • BPA-Free

    BPA-Free

    Sip and enjoy.

    Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.

  • Lifetime Warranty

    Lifetime Warranty

    We stand behind our products.

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

Video

Reviews/Q&A

  • Reviews

  • Q & A

  • 21 oz Standard Mouth w/ Sport Cap is rated 4.3 out of 5 by 75.
    Rated 5 out of 5 by from Great addition to our collection I bought this for my wife’s birthday. She loves it. Great color, excellent product.
    Date published: 2019-05-12
    Rated 5 out of 5 by from Keeps things cold I bought my hydro Flask in April it keeps things very cold and by the end of the school day the ice is still their. The sports cap works very good and provides a great amount of water. In all my hydro flask is a great product and I would definitely recommend
    Date published: 2019-05-08
    Rated 5 out of 5 by from So pretty! I love my hydro flask and I recommend it to everyone
    Date published: 2019-05-05
    Rated 5 out of 5 by from Keeps my cold water cold. This is my second Hydro Flask and the color is an "eye catcher". Its perfect for taking to the gym.
    Date published: 2019-05-04
    Rated 5 out of 5 by from Love the bottle! A family member bought this for me and I am so glad that they did! It’s the perfect size for school and it keeps my water cold and my ice frozen all day long. Love the color! The only complaint I have is that I wish I didn’t have to unscrew the lid every time I take a drink, but I don’t like the sports cap and I would rather use the lid with the pop-up straw. Does anyone know if they make a straw lid for the standard mouth? I see they make it for the wide mouth bottles, but I don’t see one for the standard mouth. Anyone know?
    Date published: 2019-05-01
    Rated 5 out of 5 by from Works like a charm The first thing I did after unwrapping and washing my first ever Hydro Flask.... filled it with water and 5 ice cubes, then left it sitting on the counter. I still had ice cubes at 16 hours, 20 hours, and 24 hours. I was pretty darned happy about that! On our first trip, the bottle was left in a hot car on numerous occasions for various times, the longest being about 10 hours. My water was still refreshingly cold. I purchased this one on a discount sale, then later purchased the matching boot and standard leak-proof lid to use interchangeably with the not 100% leak-proof sport cap. If I could afford more, I would definitely buy more, but this first one was already a strain on my tight budget.
    Date published: 2019-05-01
    Rated 5 out of 5 by from epic water bottle i got it today and let me say it has an excellent bottle to mouth hit of refreshing water dude like oml so epic dood
    Date published: 2019-04-25
    Rated 5 out of 5 by from Awesome product! Perfect for everyday life whether hiking, walking, biking, in car on the go or home, my drinks stay hot or cold for days.
    Date published: 2019-04-14
    Rated 5 out of 5 by from I love the color and cap! I got this a couple weeks ago, and I don’t leave home without it. I love it for work (water and ice stay cold all day), I love it for hikes (the sport cap is perfect with the loop I can clip it on my bags), and I love the color (it may be a discontinued color but it’s my favorite)!
    Date published: 2019-04-14
    Rated 5 out of 5 by from Great gift Me and my mom started working out two months ago. She saw my hydro flask and said that she should get one so I got it for her as a gift. She loves it and uses it everyday.
    Date published: 2019-04-09
    Rated 5 out of 5 by from Awesomeness.. I bought a lot of Hydro flask the past months because I love the way they keep my drinks at a perfect temperature.
    Date published: 2019-04-06
    Rated 5 out of 5 by from Love I’m very glad I got this even in a retired color they’re super beautiful and keeps temp very long I hand wash because I put stickers on it
    Date published: 2019-04-03
    Rated 5 out of 5 by from Love it! Skinny enough to fit anywhere. Can take everywhere.
    Date published: 2019-03-29
    Rated 5 out of 5 by from Keep liquid cold even in a hot car for hours Hydro Flask is the best thing in the market to keep liquids hot or cold
    Date published: 2019-03-29
    Rated 5 out of 5 by from Better than I could ever expect! I bought this hoping to keenwater warm for my sons formula during an 8 hour car ride. It exceeded my expectations! Kept it warm for days!
    Date published: 2019-03-28
    Rated 5 out of 5 by from Good Looking and Keeps Liquids Cold! I bought one for my partner and myself about a month ago. I saw an online ad and thought the campaign looked cool and the reviews were good vs. the more expensive well-known option. I've been surprised at cold water 48 hours later! Love it!
    Date published: 2019-03-25
    Rated 5 out of 5 by from Works Perfectly! Bought this water bottle for home and daily used. I was excited to customize with it stickers, and now that I have, it’s personalized and I love it. Once left it in my room for around 7 hours and when I returned the water was still cold as ice, love it!
    Date published: 2019-03-19
    Rated 5 out of 5 by from Amazing I never drink out of water bottles unless they are plastic but this has changed my life
    Date published: 2019-03-15
    Rated 5 out of 5 by from Great water bottle!! Keeps drinks cold for days-so great! I would highly recommend
    Date published: 2019-03-12
    Rated 5 out of 5 by from So many compliments!! I was in the market for a new hydroflask since my old one had accidentally been run through the dishwasher a few too many times. Every time I walk around campus or have my water bottle out in class, I am always receiving so many wonderful compliments on this lovely blue color. love. love. love
    Date published: 2019-03-11
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  • Which bottle best fits into a bicycle water bottle cage holder? Could you please include photos of bicycles with a hydroflask in the bottle cage? It would be so much more helpful than your standard response to this question on the FAQ page.

    Asked by: SLuke
    I use the 21 oz bottle with the flex cap in my bike holder and I believe the 24 oz would also fit since it’s just taller.
    Answered by: Kim99
    Date published: 2019-05-07

    I’m planning to order a hydro and would love to put stickers on it. What is the area of this hydro so I’ll know how many stickers to order? Thanks!

    Asked by: quinlan21
    Quinlan21, Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
    Answered by: customer servcie
    Date published: 2019-05-07

    Will a straw lid be available for the 21oz HF?

    Asked by: Haughtohio72
    We do not currently manufacture a product that matches your request, but we’ll document your suggestion for future consideration by our Product Development Team.
    Answered by: Hydro Flask Customer Team
    Date published: 2019-01-11

    Why does it say the bottle will keep beverages cold or hot and then say hot beverages not recommended? I find this confusing and misleading. 

    Asked by: Rroy
    The sports cap is what is not recommended with hot beverages. You can use the flask for hot and/or cold beverages, but the sports cap should not be used. You would want the flex cap.
    Answered by: Hydro Flask Customer Team
    Date published: 2019-04-28

    Are your products made inUSA?

    Asked by: Sherrill
    We appreciate your interest in Hydro Flask. Our flasks are manufactured in China, and the caps are manufactured in both China and USA. If you have a specific question or concern, please reply with more detail and we'll be happy to assist you further.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-01-17

    Is the Hydroflask dishwasher safe?

    Asked by: Grandpa
    We do not suggest putting your flask through the dish washer. For cleaning, we recommend hand washing with a bottle brush and mild dish soap.
    Answered by: Hydro Flask Customer Team
    Date published: 2019-04-28

    what is the diameter in inches of the water bottle mouth opening? would it fit a 2.5" lid?

    Asked by: makerra
    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: 2018-01-17

    Can you use the sport top with hot liquids?

    Asked by: hockeyplayer
    No, it is not recommended.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-01-17
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