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 229.
    Rated 5 out of 5 by from Great sport cap I bought it last week and it’s high quality and keeps stuff cold
    Date published: 2019-09-14
    Rated 5 out of 5 by from I love this hydro so much I bought this a month ago and I already am in love
    Date published: 2019-09-14
    Rated 5 out of 5 by from Great Item! I bought this product a few months ago because I play sports and was using way too many water bottles. #savetheturtles
    Date published: 2019-09-14
    Rated 5 out of 5 by from amazing i got 3 hydros (not a Vsco) and really love them. they keep the beverage hot and cold for a very long time. they are super cute and fun.
    Date published: 2019-09-14
    Rated 5 out of 5 by from Great I bought this a week ago and it is awesome It's so nice
    Date published: 2019-09-14
    Rated 5 out of 5 by from It’s a very great Hydroflask I bought one for myself and sister and it’s worth it!! Very great for outdoors keeping your drinks cold during the summer
    Date published: 2019-09-14
    Rated 5 out of 5 by from Awesome This is definitely my favorite water bottle! It keeps my water cold all day long! I highly recommend, worth the price!
    Date published: 2019-09-14
    Rated 5 out of 5 by from Best quality! I’m so happy with my hydro flask!! My girl love it too!
    Date published: 2019-09-13
    Rated 5 out of 5 by from AMAZING This is so worth the money. i’m so glad i bought it
    Date published: 2019-09-13
    Rated 5 out of 5 by from Great I love the hydro flask. I use it everyday and it keeps my drinks cold and/or hot.
    Date published: 2019-09-13
    Rated 5 out of 5 by from I love the straw I love the bottle keeps everything cool. Hands down best water bottle I have ever had
    Date published: 2019-09-13
    Rated 5 out of 5 by from I love these! I bought one about a year ago and it still works great! It’s keep your beverage cold all day. There are so many options from sizes to color, such a reliable brand great product!
    Date published: 2019-09-13
    Rated 5 out of 5 by from kept ice cold over night and was a perfect size i bought one a little while back and have loved it ever since
    Date published: 2019-09-13
    Rated 5 out of 5 by from amazing! this water bottle is amazing! it keeps everything cold and is really cute
    Date published: 2019-09-13
    Rated 5 out of 5 by from Very strong I’ve been using this product for a while and it has not broke on me yet
    Date published: 2019-09-12
    Rated 5 out of 5 by from Hydro flask are amazing Hydro flask are so amazing it keeps my drinks cold and I give Hydro flask five stars because they’re just amazing and I recommend people getting Hydro flask of the last you a really long time .
    Date published: 2019-09-12
    Rated 5 out of 5 by from Amazing quality! This is the best water bottle that you can get. I maintains the cold temperature the whole day and it is very sturdy. A hundred percent will recommend.
    Date published: 2019-09-12
    Rated 5 out of 5 by from Cool bottle Got it last week actually really cool I really like it and would definitely purchase another one
    Date published: 2019-09-12
    Rated 5 out of 5 by from It works really well!! I bought this and it works so good and it helped me become a VSCO girl!!
    Date published: 2019-09-12
    Rated 5 out of 5 by from Keeps cool My cousin gave this to me as a gift and I love it I use it all the time
    Date published: 2019-09-12
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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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