Overview
Your perfect travel companion.
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.
Product Benefits
- Versatile, middle-of-the-road size
- 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 Standard Mouth Insulated Sport Cap
- Lifetime Warranty
Size & Dimensions
| 21 oz | |
|---|---|
| Volume | 621 mL |
| Mouth Diameter | 1.91" |
| Diameter | 2.87" |
| Height | 9.4" |
| Weight | 11.3 oz |
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
Comfortable and durable.
Our proprietary powder coat means an easy-grip, sweat-free, and extra-durable bottle that you can take anywhere.
BPA-Free
Sip and enjoy.
Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.
Lifetime Warranty
We stand behind our products.
Hydro Flask guarantees this Hydro Flask product with a limited lifetime warranty against manufacturer defects.
Two words that kick off every adventure.
#HeyLetsGo
Overview & Specs
Overview
Your perfect travel companion.
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.
Product Benefits
- Versatile, middle-of-the-road size
- 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 Standard Mouth Insulated Sport Cap
- Lifetime Warranty
Size & Dimensions
| 21 oz | |
|---|---|
| Volume | 621 mL |
| Mouth Diameter | 1.91" |
| Diameter | 2.87" |
| Height | 9.4" |
| Weight | 11.3 oz |
Technology
-
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
Comfortable and durable.
Our proprietary powder coat means an easy-grip, sweat-free, and extra-durable bottle that you can take anywhere.
-
BPA-Free
Sip and enjoy.
Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.
-
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 is rated out of 5 by 347.Rated 5 out of 5 by Jay H from Sleek bottle! I received this very sleek and trendy bottle. I have been using it for water throughout the day. It holds a decent amount of water. The bottle keeps liquid cold for several hours which is a plus. The sleek design with the black matte finish is beautiful. I have actually purchased this bottle in other colors for my family. We love it!Date published: 2019-05-08Rated 5 out of 5 by Anonymous89 from Worth the Money! My water bottle works great! It keeps the water so cold all day long. My ice was able to stay frozen for up to six hours. Best water bottle company!Date published: 2019-05-01Rated 5 out of 5 by Pay96 from Best bottle on the market I can’t say enough good things about my hydro flask. Keeps my water the perfect temperature for prolonged periods of times, sleek and ergonomically pleasing. I never used reusable bottles before but I know I’ll never need to use plastic again because of how amazing this bottle is. Worth every cent!Date published: 2019-04-27Rated 5 out of 5 by Candy12 from Overall I bought this item a month a go and I am loving it. My ice last from early in the morning to late at night and it’s super portable totally recommendDate published: 2019-04-25Rated 5 out of 5 by Jasonhj21 from Great bottle Bought a month ago for gf, she loves it very much. Will definitely recommend.Date published: 2019-04-10Rated 5 out of 5 by Waterchica from Really stays cold!! I was so excited to try a hydro flask after trying so many other refillable water bottles. Every single other water bottle I’ve tried to use has either tasted metallic or retained the taste/smell of dish soap from washing. I am so thrilled that my hydro does neither, and keeps ice frozen overnight! My only regret is that I purchased a smaller-size; before i purchased this water bottle, I did not drink much water throughout the day and assumed that I would only need a small water bottle.Date published: 2019-04-05Rated 5 out of 5 by Michael7303 from Best water bottle I bought my hydro flask a few weeks ago because I loved my first one, but I needed something smaller to fit in my bag. It keeps my water cold throughout the day, I only put ice in it in the morning.Date published: 2019-04-01Rated 5 out of 5 by jos1423 from love. this. hydroflask perfect size for a school and work. love the awesome colorDate published: 2019-04-01Rated 5 out of 5 by Joshy from Usefulness with a kick of individuality I love using my hydroflask! I take it wherever I go and the contents always stay in the temperature i desire. Totally worth it.Date published: 2019-03-23Rated 5 out of 5 by Lily A from Lasts years I took a trip to Hawaii in August of 2015 and I needed a water bottle for all the hiking I was going to be doing. The family friends I was staying with recommended hydro flask so I bought one that week. It’s currently March of 2019 and I’m still using the same water bottle after using it pretty much every single day, and it still works just about as well as it did when I bought it. Its been nearly four years and in that time its rolled down a mountain, fallen out of a moving vehicle, and has been dropped a few times so it’s dented, and chipped all over the place so I’m amazed that it still works so well. My only complaints are that it does chip and ding very easily. It seems like anytime it falls more than a foot there’s another notch in the color. Also, the color seems to be wearing off in places. I bought a flex boot for it yesterday to try to protect it enough to get more use out of it.Date published: 2019-03-12Rated 5 out of 5 by Emily88 from My favorite water bottle! This is the third water bottle I've purchased in this size and style and I love it! The cap seals perfectly so you don't have to worry about spills, and it doesn't create any condensation on the outside even with ice cold water.Date published: 2019-03-11Rated 5 out of 5 by Jam23 from Nice size! I like this smaller one to grab and go for the car! Fits right in my cup holder!Date published: 2019-03-09Rated 5 out of 5 by Julie650 from It’s amazing Ever since l Got it lve been motivated to drink more water. Love itDate published: 2019-03-09Rated 5 out of 5 by KimL from LOVE. The color is gorgeous. The bottle is so sturdy. I love the twist off cap with handle. Fits in my cup holder easily. Best water bottle ever. Beautifully packaged and delivered as well!Date published: 2019-03-05Rated 5 out of 5 by Mommaof4 from I don't know why I waited so long to purchase one I bought this a month ago and have been so pleased. My water stays ice cold all day and even overnight. Very pleased.Date published: 2019-03-04Rated 5 out of 5 by Gham from Love love love I bought the standard mouth 21oz hydro flask in Frost. Holy moly, I am so in love with this color. I have the 32oz in mint but I love the light simplicity look of this color.Date published: 2019-02-28Rated 5 out of 5 by ezdzit72 from Amazing container... I recently purchased this for my daughter, she loves the color it’s so bright. It keeps the water cold for hours and even when there is no more water the ice cubes stay frozen till the morning.Date published: 2019-02-20Rated 5 out of 5 by Mensa11 from Quality Water Flask As an athlete, I work to keep hydration as a central part of my life. Naturally, I believe water is the most key source of hydration. I take water with me to all of my sporting events. I also bring water to school five days out of the week. As you can imagine, that would be a ton of plastic bottles. This is why I take my Hydro Flask with me to everywhere I go. This bottle has a handle connected to the cap, making it easy to hold. This may sound like an irrelevant feature, but you would be surprised how many times I have dropped my past refillable aluminum bottles. This bottle is the perfect dimensions for all convenience, fitting nicely into the side pocket of my backpack. This bottle is also insulated, making it ideal for many different drinks. The bottle is wide mouthed, making for a smooth drinking experience. The only con I have about this bottle is that when I straighten the bottle back from taking a sip, it has a tendency to splash out of the mouth. This is a problem that has persisted throughout my use of all aluminum bottles. Lastly, the Hydro Flask has been more durable than any bottle I’ve used so far. It is extremely frustrating investing in a bottle to be refilled for repeated use, only for it to become dented beyond convenience after a short spell of months. This is also a very unsustainable practice, which results in many products that will never even begin to break down in our landfills. For these reasons, I have enjoyed using the Hydro Flask and it has lived up to the hype that has been created around it.Date published: 2019-02-20Rated 5 out of 5 by jamtub1105 from Keeps water cold I bought this a couple weeks ago and never placed it down ever again. It goes everywhere with me from class to the gym or just in my study tableDate published: 2019-02-13Rated 5 out of 5 by Jwh0524 from Texture, weight and functionality is perfect I like it better than my Yeti with no doubt. The mouth opening is perfect size for ice and not spilling.Date published: 2019-02-13
What is the material on the inside made of? And is there any toxic metals or other toxic chemicals used to manufacture these?
18/8 and 18/10: These are the two most common grades of stainless steel used for food preparation and dining, also known as Type 304 (304 Grade) and are part of the 300 series. The first number,18, refers to the amount of chromium present and the second represents the amount of nickel. For example, 18/8 stainless steel is comprised of 18% chromium and 8% nickel. 304 grade stainless steel is also comprised of no more than 0.8% carbon and at least 50% iron. The chromium binds oxygen to the surface of the product to protect the iron from oxidation (rust). Nickel also enhances the corrosion resistance of stainless steel. Therefore, the higher the nickel content, the more resistant the stainless steel is to corrosion.Date published: 2018-01-29Can you keep a hydro in the refrigerator with water in it?
You can put it in the refrigerator. It really does not help. The double vacuum is what keeps the beverages hot and/or cold.Date published: 2018-01-24Have standard sport cap for my 21oz flask. Purchased Jan 2017. Noticed recently a bubbling sound as I drink. Should there be this sound? Maybe it's always been there & I've just become aware of it. Or should it be quiet? In which case I'll buy new cap.
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/)Date published: 2018-01-15Can it be placed in the freezer?
We do not recommend putting the flask in the freezer.Date published: 2017-12-29Does this drink bottle dent easily when you drop it and would you recommend the boot otherwise?
The flask can become dented if it is dropped. The boot does offer a little more protection, but depending on how it hits, it could still dent.Date published: 2018-07-13Do you ship to Australia? How much is the postage?
We do not ship international.Date published: 2018-01-14can the waterbottle shown above be used for HOT and cold also if i do the lid and the add on one can that be used for hot drinks
The flasks can be used for hot and/or cold beverages. This flask is a standard mouth flask. Our hot beverage cap would be the flip cap which is for wide mouth flasks. So, if you want that cap, it would have to be a wide mouth flask.Date published: 2018-01-11Hi! Is this product dishwasher safe?
No. We do not recommend placing the flasks in the dish washer.Date published: 2019-03-20
