21 oz Standard Mouth w/ Sport Cap
21 oz Standard Mouth w/ Sport Cap is rated 4.4 out of 5 by 429.
  • y_2020, m_7, d_8, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_429
  • loc_en_US, sid_S21ST, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hydro-flask
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getAggregateRating, 5.42ms
  • REVIEWS, PRODUCT
Regular Price $35.95
$26.96

21 oz Standard Mouth w/ Sport Cap

21 oz Standard Mouth w/ Sport Cap is rated 4.4 out of 5 by 429.
  • y_2020, m_7, d_8, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_429
  • loc_en_US, sid_S21ST, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hydro-flask
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getAggregateRating, 4.24ms
  • REVIEWS, PRODUCT
Regular Price $35.95
$26.96
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
Product image
add to cart
Features
Back to Navigation

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
Back to Navigation

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
Lifetime Warranty

We stand behind our products.

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

Back to Navigation
https://www.youtube.com/embed/SKjnrvgz-UY?rel=0&enablejsapi=1
Let's Go!

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

#HeyLetsGo

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.
You May Also Like
  1. Regular Price $34.95
    $17.48
    Small Tag Along Bottle Sling
    Colors Available
  2. Regular Price $9.95
    $7.46
    Square - 600x600
    Colors Available
Back to Navigation
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
  • y_2020, m_7, d_8, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_429
  • loc_en_US, sid_S21ST, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hydro-flask
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getReviews, 3.64ms
  • REVIEWS, PRODUCT
Questions

I would like to know if you guys still sell the mint colored 21oz standard mouth bottle. Also, do you guys bring back old colors? It was my favorite but I lost it and I can't see myself without that lovely color!

Asked by: Jess15
At this time we are not making the Mint color. Product colors are based on consumer feedback. I will forward your suggestion over to our product development team.
Answered by: Consumer Service
Date published: 2020-02-03

Can I order this bottle but with the flex-cap? I noticed that they don't offer the 21oz Standard Mouth w/ flex cap in the &quot;frost&quot; color.

Asked by: kyororo
The 21oz standard flask that comes with the flex cap is currently out of stock in the color Frost. Please contact customer service at 888-584-9376 to discuss this further.
Answered by: Consumer Service
Date published: 2019-10-30

My bottle has a rattle has something broken inside?

Asked by: Javo123
The rattle you hear is a small metal disc that sits between the double wall of your flask that aids in the vacuum insulation process. If the disc becomes dislodged, you&rsquo;ll hear a small gritty noise or rattle. This will not affect the insulation or structural integrity of your flask.
Answered by: Consumer Service
Date published: 2019-10-30

Is the sports cap easy to open? My mom has arthritis and is looking for a water bottle she use easily.&nbsp;

Asked by: Katieroo
When the sports caps are brand new, they can be a little hard to open and close. I would recommend a wide mouth flask with a straw lid.
Answered by: Consumer Service
Date published: 2019-10-29

what lids can be used with this bottle besides the sports cap and the flex cap?

Asked by: timmothy
The Standard Mouth Sports Cap and the Standard Flex Cap are the only caps available for the standard mouth flasks at this time.
Answered by: Consumer Service
Date published: 2019-10-27

Are you able to put ice cubes in the standard mouth bottle or is it to narrow for ice cubes to fit through the top?

Asked by: Caterina
Normal sized ice cubes will fit in the standard flask.
Answered by: Consumer Service
Date published: 2019-10-27

So this bottle works w both the sports cap and the standard sized screw able lid?&nbsp;

Asked by: Kayla14
Yes
Answered by: Consumer Service
Date published: 2019-10-27

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: 2019-07-14
  • y_2020, m_7, d_8, h_15CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_76
  • loc_en_US, sid_S21ST, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hydro-flask
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getContent, 5.32ms
  • QUESTIONS, PRODUCT

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.
You May Also Like
  1. Regular Price $34.95
    $17.48
    Small Tag Along Bottle Sling
    Colors Available
  2. Regular Price $9.95
    $7.46
    Square - 600x600
    Colors Available