Bottles

21 oz Standard Mouth

$32.95
21 oz Standard Mouth

Bottles

21 oz Standard Mouth

$32.95


  • Flex Cap
    Flex Cap
    Included
  • Sport Cap - +$6.00
    Sport Cap
     
$32.95

Quantity

Purchase via Dealer

Lifetime

Sale discount on this color will be automatically applied in cart.

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
  • TempShieldTM 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

    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 every Hydro Flask product with a limited warranty against manufacturer defects. Hydro Flask Hydration, Tumblers, Coffee, Beer, Wine & Spirits, Food, Large Capacity Hard Goods, and Hard Goods Accessory Products carry a limited lifetime warranty against manufacturer defects for the life of the product.

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
  • TempShieldTM 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

    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 every Hydro Flask product with a limited warranty against manufacturer defects. Hydro Flask Hydration, Tumblers, Coffee, Beer, Wine & Spirits, Food, Large Capacity Hard Goods, and Hard Goods Accessory Products carry a limited lifetime warranty against manufacturer defects for the life of the product.

Video

Reviews/Q&A

  • Reviews

  • Q & A

  • 21 oz Standard Mouth is rated 4.2 out of 5 by 34.
    Rated 5 out of 5 by from This thing rocks Got mine right before moving to Colorado and it has served me so well for hiking, camping, road trips, and festivals. It's so durable and even survived getting run over by our SUV. It's also considerably reduced the amount of plastic water bottles. Win win all around.
    Date published: 2018-07-09
    Rated 5 out of 5 by from Awesome water bottle! I bought my hydroflask about 6 months ago and so far I really like it. It is a little expensive, but definitely worth it, especially if you can get it on sale. It comes with the standard cap, but I'm interested in purchasing the sport cap. I do wish the company could make a straw lid since twisting the cap off gets a little tedious. My favorite part about the bottle is how long it keeps water cold. I can put ice cubes in it in the morning and they will still be there at night. Another thing I love is the fact that there's no condensation on the outside of the bottle. My only complaint is that it scratches and dents fairly easily. I've dropped it a few times and there's some minor dents and scratches. Overall I would definitely recommend!
    Date published: 2018-07-04
    Rated 5 out of 5 by from Hydro flask is Life! I have now bought 2 of these. My son has bought 2 & my husband 2 as well. My son’s girlfriend has 1 or 2 & we convinced a family friend to get one. EVERY single one of us is EXTREMELY Happy with our Hydro’s! I don’t know how I survived without them!!!
    Date published: 2018-06-28
    Rated 5 out of 5 by from LOVE IT!! These work wonderfully!! Left sitting in my hot car and hours later still had ice in the bottle. They are too good to be true! Totally worth the cost!
    Date published: 2018-06-24
    Rated 5 out of 5 by from AMAZING I bought this Hydro Flask yesterday and I love it so much. I got the 21oz Flamingo bottle. It is amazing.
    Date published: 2018-06-23
    Rated 5 out of 5 by from After a year... I bought a Hydro flask last year in Canada and loved it. I just bought the normal cap and not the drinking cap which I bought later when back in the UK. You need to use the appropriate lid as the drinking lid air hole can become blocked if milk or something sugary is put into the flask. On a normal day I fill the flask with water, add a few ice cubes and you can hear them clanking around inside many hours later. Really like the product, works well, is easy to carry. I've not used it with hot liquids as I'm not sure how easy it is to drink from. All in all after daily use for a year I'd have another in a heartbeat.
    Date published: 2018-06-12
    Rated 5 out of 5 by from This Bottle is the GOAT! My reasons for loving this bottle: 1. Not a day goes by that I don't use at one of these bottles for water, tea, and food ... I have multiple bottles, in several sizes, so feel qualified to write a review. 2. The outside of the bottle feels good to the touch ... good temperature for my hands, feels smooth against my skin. This might sound strange, but this matters to me. The bottle never, ever gets condensation on it, even in the hottest east coast weather. When I have hot drinks in a bottle, the outside doesn't get hot to the touch. 3. Sometimes I drink from the bottle itself, and sometimes I use the spout ... my experiences with both methods have been positive. 4. My drinks taste just like they are supposed to ... just the drink! There is no taste from the inside of the bottle that leeches into my drinks. 5. There is nothing on these bottles that can break if you accidentally drop them. I have accidentally dropped other bottles from big box stores, only to be disappointed that the spouts break ... and back to the store I went to get a new bottle. No more wasting time and money now that I've found these gems! 6. Because of how this bottle is manufactured, there is maximum volume on the inside for your drinks as compared to bottles that can be purchased at big box stores. 7. My family and friends have received these bottles as gifts and have given them rave reviews. 8. I anticipate having my bottles for life ... worth the investment because they will surely last.
    Date published: 2018-06-12
    Rated 5 out of 5 by from How good is your lifetime warrenty? I have had a 21 oz. hydro flask with a sport cap for about 5 years. I have noticed that my bottle is leaking from the lid. It seems hat the o ring has worn and is not holding liqiuds from leaking. Dudes your life time warranty cover leaky sports lid? I use your flask 5x a week.
    Date published: 2018-05-23
    Rated 5 out of 5 by from LoVe ThE FlAsK I love this water bottle! I've had it for over a year and I'm going to buy a new one, not because the other one stopped working. The color is great, the paint doesn't chip even when you drop it. If you're lucky when you drop it it won't dent. It keeps the cold liquids in and it's great.
    Date published: 2018-05-08
    Rated 5 out of 5 by from AMAZING I got this as a Christmas gift and I love it so much!! 10 out of 10. Great water bottle quality. Beautiful water. The bomb dot com.
    Date published: 2018-04-23
    Rated 5 out of 5 by from Awesome. Nice grippy texture, convenient hand Two weeks in and I'm loving it. Already traveled on a plane with it, took it to the beach, take it to and from work on my bike every day, and dropped it on the floor. I've never had an insulated bottle before so it's been regularly surprising how cold it keeps my water. I haven't achieved the 6/8+ hours of ice that some people claim, but I also don't use a lot of ice and often don't close the lid out of laziness.
    Date published: 2018-03-27
    Rated 5 out of 5 by from Great for both hot and cold I never thought I would write a review about a water bottle. I am a big water drinker and hot tea drinker. This bottle keeps the tea hot (not lukewarm but hot) for hours. I can also fill it up with a cold drink and it keeps ice in it forever. I also really like outside of the bottle. No condensation and it is easy to hold. It was definitely worth the money.
    Date published: 2018-02-02
    Rated 5 out of 5 by from My All Time Favorite Water Bottle!!! I bought my first Hydro Flask five years ago and have never used another water bottle since. I just recently lost my 18 oz and got the 21 oz in stainless steel and love the quality, cap, and look. I would definitely recommend getting this water bottle to anyone, and if you unsure about buying it, trust me, it's worth it. :)
    Date published: 2017-12-29
    Rated 5 out of 5 by from The best water bottle I bought this recently and it’s my favorite water bottle. It is amazing at keeping water cold and hot. I also like how the metal taste doesn’t transfer onto the water. Although it does dent quite easily, it is still an amazing water bottle.
    Date published: 2017-12-27
    Rated 5 out of 5 by from Love mine Absolutely love this water bottle I own multiple. But when am I going to be able to buy one in light pink
    Date published: 2017-12-13
    Rated 5 out of 5 by from These things work!!! I have several sizes of these and they ABSOLUTYELY work. People that give a bad review because theirs dosen't need to just return it and Hydro Flask will replace it. My only complaint is no matter how hard I try to close the nipple on the sport lid, it still leaks when on it's side... Like when I lay my backpack down... I do need to send it back for a replacement...
    Date published: 2017-11-27
    Rated 5 out of 5 by from Long Time Fan of Hydroflask My family and I first bought our hydroflasks almost 8 years ago at the Portland Saturday market when they were first starting out and they are the only water bottles and coffee mugs we use now! I, personally have three hydroflask products (2 water bottles and a coffee mug) and we have introduced the products to all of our friends and family. Not only are they good for the environment, but they keep your beverages cold and/or hot ALL DAY LONG!! They are also a wonderful company with great values! I will continue to buy hydroflasks for years to come!!
    Date published: 2017-10-31
    Rated 5 out of 5 by from Watch out Summer! I enjoy cold water but dislike the condensation that comes with adding ice to a plastic bottle. These are perfect! All 4 of our family members have one and we use them daily. I've had to replace 2 because my husband and daughter dropped them on the driveway and they dented at the bottom. There still good, but don't stand up straigt due to the dent. Our fault, oops! I will continue to be a fan- Hydro Flask is awesome!
    Date published: 2017-09-21
    Rated 5 out of 5 by from Keeps Ice Forever! I have never had a water bottle that's kept my water so cold for so long! It still had ice in it after 24 hours! Amazing!
    Date published: 2017-07-16
    Rated 5 out of 5 by from BEST WATER BOTTLE EVER I bought this water bottle for school and I have used it every day since. It keeps my water ice cold in this 105-degree desert and despite dropping it several times, it has held up very well. This hydro flask also looks very nice and is easy to carry. In the end, this is an amazing water bottle as it is very durable, keeps iced water very cold, and looks nice.
    Date published: 2017-07-07
    • y_2018, m_7, d_20, h_23
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_34
    • loc_en_US, sid_S21SX, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_hydro-flask
    • bvseo_sdk, p_sdk, 3.2.1
    • CLOUD, getContent, 21.88ms
    • REVIEWS, PRODUCT
  • What is the material on the inside made of? And is there any toxic metals or other toxic chemicals used to manufacture these?

    Asked by: Marigold4
    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.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-01-29

    Can you keep a hydro in the refrigerator with water in it?

    Asked by: Teddy2
    You can put it in the refrigerator. It really does not help. The double vacuum is what keeps the beverages hot and/or cold.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-01-24

    Have 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.

    Asked by: MarieD
    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: Hydro Flask Customer Team
    Date published: 2018-01-15

    Can it be placed in the freezer?

    Asked by: Jazzie
    We do not recommend putting the flask in the freezer.
    Answered by: Hydro Flask Customer Team
    Date published: 2017-12-29

    Does this drink bottle dent easily when you drop it and would you recommend the boot otherwise?

    Asked by: sugarlotus866
    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.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-01-14

    Do you ship to Australia? How much is the postage?

    Asked by: sugarlotus866
    We do not ship international.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-01-14

    can 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

    Asked by: dudek1313
    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.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-01-11

    Hi! Is this product dishwasher safe?

    Asked by: RaspyRach
    No. We do not recommend placing the flasks in the dish washer.
    Answered by: Hydro Flask Customer Team
    Date published: 2018-02-23
    • y_2018, m_7, d_20, h_23CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_67
    • loc_en_US, sid_S21SX, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_hydro-flask
    • bvseo_sdk, p_sdk, 3.2.1
    • CLOUD, getContent, 30.84ms
    • QUESTIONS, PRODUCT

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.