21 oz (621 ml) Standard Mouth
21 oz Standard Mouth is rated out of 5 by 1443.
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<h2>Your perfect travel companion.</h2>
<p>Keep life moving with our 21 oz bottle and Standard Flex Cap. It stashes easily into a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough ice cold goodness to keep you going for hours without weighing you down. No wonder it's one of our bestselling water bottles.
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Your perfect travel companion
Keep life moving with our 21 oz (621 ml) bottle and Standard Flex Cap. It stashes easily into a small shoulder bag, your pack’s side pocket or your car cup holder, and holds enough ice-cold goodness to keep you going for hours without weighing you down. No wonder it's one of our bestselling water bottles.
21 oz (621 ml) Standard Mouth Insulated Water Bottle | Hydro Flask
Features
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![TempShield]()
![Pro-Grade Stainless Steel]()
![Cold Flow System]()
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.
Pro-Grade Stainless Steel
Made with 18/8 pro-grade stainless steel to ensure pure taste and no flavour 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.
Details
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Product Benefits
- Versatile, middle-of-the-road size
- TempShield™ insulation eliminates condensation and keeps beverages cold for up to 24 hours and hot for up to 12 hours
- Durable 18/8 Pro-Grade Stainless Steel construction
- BPA-Free and Phthalate-Free
- Compatible with Standard Mouth Insulated Sport Cap
- Lifetime Warranty
Size and Dimensions
| 21 oz (621 ml) | |
|---|---|
| Volume | 621 ml |
| Mouth Diameter | 4,9 cm |
| Diameter | 7,3 cm |
| Height | 23,9 cm |
| Weight | 11.3 oz (320 g) |
Technology
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We have great faith in our products
Hydro Flask guarantees this product with a limited lifetime warranty against manufacturer defects.
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https://www.youtube.com/embed/SKjnrvgz-UY?enablejsapi=1
Hydro Flask supports non-profit organisations focusing 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 (approx. £1.197 million) donated donated.
-
26,043 Bottles donated bottles.
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Reviews
Rated 5 out of
5
by
JayF from
Ahhh, cold water.
Took mine to the Amazon jungles of Peru on a missions trip. We brought them water filters, a doctor with medicines, clothing and love.
Date published: 2022-09-23
Rated 5 out of
5
by
TracyeKieger from
Perfect size for traveling
Ice keeps the water cold for hours! Great for Maui honeymoon, vacations. Fits great in side backpack, cup holder, and easy to carry. We love our 21 ounce, it is the perfect size!’n
Date published: 2022-09-13
Rated 5 out of
5
by
Coolet from
love it!!!
I super love the color !!! Planning to buy another , my Son took my bottle. He also love the size and the color.
Date published: 2022-09-10
Rated 5 out of
5
by
EmmaL from
Keeps Water Cold in Senegal's Intense Heat
These bottles are amazing! I have been raving about Hydro Flask since I bought one in March and immediately had the chance to test it out in 110 degree weather in Senegal, where the nonprofit I work for supports projects. Incredibly, even after hours in a van in blistering heat, water in my bottle stayed cold. I would love to provide these to every student at the residence for young women in eastern Senegal that I work with!
Date published: 2022-09-06
Rated 5 out of
5
by
Elsie22 from
My favorite!
I bought these and absolutely love them, will keep your ice and drink perfectly all day, even in the hot Texas summers!
Date published: 2022-08-15
Rated 5 out of
5
by
Nikki23 from
Hydro flask
I received this product in exchange for my honest review. First off the color of this bottle is beautiful. Second, whatever you put in it stays cold all day long along with the ice. Great for long trips for hiking
Date published: 2022-07-12
Rated 5 out of
5
by
Rossocal from
Keeps it cool
This hydro flask is perfect for both cold or hot drinks. I use it mostly for keeping my water ice cold but I have also used it for coffee in the past. The color really makes it unique. All of their products are good quality.
Date published: 2022-07-07
Rated 5 out of
5
by
krisseyv92 from
The best waterbottle
I love my hydro flask. The color is cute, the size is perfect (not too bulky or small), and most importantly, it keeps things cold. I’ve tried a lot of other brands and nothings keeps my water iced longer than a hydro flask. And they’re super durable and last for ages. Highly recommend
Date published: 2022-06-30
Rated 5 out of
5
by
LanaVol from
Great water bottle!
There are so many things to love about this water bottle. It has such a minimalistic and sleek design, and the color is very bright. It's the perfect size for urban day to day use. Its tall and skinny design makes it easy to carry around, and it fits in my car's cup holder. I like that it has a carry strap so I can grab it or even use the carabiner to attach it to my bag or bicycle. The coat is grippy in texture so it is very easy for me to hold onto a bottle, but still slippery enough to slide into any pocket or corner of a bag. The lid is easy to open and close with sweaty hands and it's completely watertight. It really keeps your drinks cold/hot for said amount of time and the mouth is wide enough that I can put ice in the bottle as well as get a brush in there to clean it. Unlike some other bottles, It is comfortable to drink directly from because the threads are on the inside of the mouth spout so lips cannot touch screw threads. I definitely recommend this water bottle!
Date published: 2022-06-30
Rated 5 out of
5
by
AggC from
Perfect size for an afternoon walk
I have different a collection of drink containers and this 21 oz standard mouth bottle is one of my favorites. I have one for different occasions and use - bigger bottles for longer trips or carry more volume, smaller bottles for a short walk or trip, gardening etc. It's harder to drink from larger bottles, especially if riding a bicycle or driving a vehicle or doing some activity - the 20-24oz size bottles are perfect. This came with a shoulder bag/strap which makes carrying the bottle much more easier/comfortable. The keeps cold and hot drinks - great for a cold water/lemonade or power drinks, or for coffee/tea. Good simple design - nice teal color on the bottle.
Date published: 2022-06-27
Questions
I am looking at the 21 oz. standard mouth Insulated Water Bottle. What lid comes on it...and is there a picture or demo of it somewhere? Thanks...
It comes with the standard mouth flex cap. You can visit our website www.hydroflask.com to view a picture of the cap.
Date published: 2021-08-18
Do they float? I'm looking for something with a closed lid to use on my kayak and with the possibility of flipping the kayak I would like to make sure I will be able to locate the flask if that were ever to happen.
Hello, I do apologize about the longer response time!
No, with the flask being filled they would not float. They may float if they happened to be empty at the time but I cant guarantee that.
Date published: 2020-11-06
Will this size fit in a standard cupholder?
Hello, Thanks for reaching out! I do apologize for the long response time!
Yes, the standard mouth bottles usually do tend to fit inside a standard cupholder!
Date published: 2020-11-05
I bought my Hydro Flask at Dick’s Sporting Goods will I still be offered the lifetime warranty?
Yes, it is covered under our lifetime warranty for manufacturing defects.
Date published: 2020-11-05
Are any of the water bottles dishwasher safe?
According to the Dick's Sporting Goods packaging my 24 oz small mouth i just received is dishwasher safe? Amazon is also reporting they're dishwasher safe. But I see no marking on the bottom that says it's dishwasher safe. Please explain
Date published: 2022-07-03
I am getting a metallic taste in my water from the 21 oz flask. I’m surprised as it has 18/10 stainless steel. Is there anything that would get rid of this?
We understand how frustrating treating odors can be, but we have a quick trick to battle the issue: Mix 2-3 Tablespoons baking soda with a small amount of warm water to form a paste. The paste is a nonabrasive scrub and deodorizer. Rinse the flask with warm water. Then wash with regular dish detergent.
Date published: 2021-08-25
Can I use the lid with the straw for coffee in the standard mouth 24 oz bottle
Our Wide Mouth Straw Lid is compatible with all of our Wide Mouth Bottles. Unfortunately, the 24 oz bottle is a Standard Mouth and is not compatible. We have our Standard Flex Cap and Standard Sports Cap that will fit the 24 oz bottle.
Date published: 2020-01-27
Where is this bottle manufactured?
Manufactured in China but shipping from Southaven, MS.
Date published: 2022-02-06
Hydro Flask supports non-profit organisations focusing 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 (approx. £1.197 million) donated donated.
-
26,043 Bottles donated bottles.