Bottles

21 oz Standard Mouth w/ Sport Cap

$35.95
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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 4.4 out of 5 by 301.
    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
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  • Can anyone recommend a bike cage for this bottle? I tried a plastic one to hold the bottle but the bottle was too heavy for the plastic and broke. I now have a metal cage but the metal on metal makes a lot of noise while riding my bike.

    Asked by: MikeB82
    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: 2019-06-07

    Is anything being done about the leaky sports lid? I wanted to get one for my husbands birthday.

    Asked by: Princess Lu
    If the cap starts to leak, we'd be happy to replace your cap for you under our Lifetime Warranty. You can fill out a warranty claim here: (http://www.hydroflask.com/warranty/)
    Answered by: Consumer Service
    Date published: 2019-06-06

    I see several complaints about the sports cap leaking. I want a cap that you don't have to unscrew to drink from and need the standard size to fit into my cupholder. Anyone have good experience with the sports cap or recommendations for a different one?

    Asked by: Lucy Lee
    The Standard Mouth Sports cap is NOT advertised as leak proof, and there is potential for dripping if overturned or shaken. If transporting your flask in a situation where it may not remain upright or could be jostled, we recommend using a sealed lid such as the Flex Cap.
    Answered by: Consumer Service
    Date published: 2019-06-06

    Do I need to purchase a straw for this water bottle or is the included sport cap all I need?

    Asked by: ward
    The sports cap is made to be tilted up to drink from.The product does not come with a straw included.
    Answered by: Consumer Service
    Date published: 2019-06-01

    Does it have a straw in it?

    Asked by: Soccergirl11
    The Sports Cap just has the spout. It does not have a straw in the lid.
    Answered by: Consumer Service
    Date published: 2019-05-31

    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
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