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

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Lifetime

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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 4.9 out of 5 by 274.
    Rated 5 out of 5 by from Love it I am really did enjoy this water bottle it’s very sturdy and kept my water cold for a very long time. I also enjoy the style of the bottle it is very fashionable and easy to carry. I highly recommend this product !
    Date published: 2018-11-10
    Rated 5 out of 5 by from Best water bottle ever ! I use this water bottle for the gym. It keeps my drink cold for me so when I need a drink the most it satisfies my thirst. It keep my drink cold for 24 hours. It is very durable and easy to wash. I recommend this cup to everyone.
    Date published: 2018-11-05
    Rated 5 out of 5 by from Love it I got this a few weeks ago and just recently used it, it is awesome. I had a mid morning Dr. appt. 60 miles away, i filled my flask with coffee , it stayed piping hot and was still hot when i was staerted back home. Great product !!
    Date published: 2018-11-01
    Rated 5 out of 5 by from Keeps it COLD! This is a great stainless steel flask. It keeps your drink very cold all day. It's a nice size container, 21oz, which I find to be just right for my needs. I like that the seal on the cap does not leak and that there is a loop to carry the flask on the lid. I would recommend this flask for anyone who likes to use a refillable flask and wants a cold drink!
    Date published: 2018-10-30
    Rated 5 out of 5 by from Keeps drinks hot! I’m always rushed in the morning and don’t have enough time to make my coffee. When I received the Hydro Fask for free from the Tryitsampling Community I put it to the test. I made my Coffee at 10 pm the night before and put it in the Hydro Flask. I wanted to see if it would keep it warm til the morning. It sure did! I opened the Hydro Flask at 8 am and the coffee was still warm! My only concern is that it didn’t have a spout and you have to be careful not to spill your drink.
    Date published: 2018-10-25
    Rated 5 out of 5 by from Perfect for keeping beverages hot and cold! I used the Hydro Flask for both my water and my coffee. I wanted to see how well it would do for both. I filled up my flask before work (7am) and only drank about half. When I got off work at 6 my coffee was still hot and ready to drink. The next time I used the flask I added ice water. I drink a lot so I brought an extra water bottle with me just so I could test how long the water in the flask would stay cold. I added ice water at 7am and checked it at 2. The ice had melted but the water was still very cold and refreshing to drink. I appreciate also, the handle on the lid. This feature makes it easy to carry no matter where you go. The cap twists on easily and if toppled over, does not leak. My thoughts on the Hydro Flask are that is stands up to both hot and cold, is easy to carry and all out a great product. I would definitely recommend!
    Date published: 2018-10-22
    Rated 5 out of 5 by from Awesome water bottle Tried the Hydro Flask 21 oz standard mouth in white and loved it. Liked that the bottle doesn't sweat. I put ice in it at night and my water was still cold 8 hours later! Easy to clean and great size.
    Date published: 2018-10-22
    Rated 5 out of 5 by from Great flask This hydro flask is excellent. Light weight and kept my water cold for hours and hours. I would DEF recommend. The little piece on top makes it easy to carry and the sleek design doesn't take up too much space in my gym bag or my work bag
    Date published: 2018-10-16
    Rated 5 out of 5 by from Great quality My husband loves this water bottle! It keeps water cold all day. My biggest concern was water having a metallic taste and for the first use it does a little, but once the bottle is washed more than once the metallic taste fades. The cap is very secure and the bottle does not leak if tipped over with the he cap tightly on. I would definitely recommend this product!
    Date published: 2018-10-16
    Rated 5 out of 5 by from Great bottle I received this Hydro flask from try it sampling and this item is great! It keeps my ice an water cool all day while I am at work. Also it is easy to use and fits in my work bag without any problems. It is just the right size.
    Date published: 2018-10-15
    Rated 5 out of 5 by from Excellent product! ! I received my HydroFlask a few days, and I took it on vacation to the beach with me... In the morning I used it for coffee as I did shopping. I was amazed that my coffee stayed warm!! I took it to the beach in the afternoon with a cold drink, I was absolutely surprised that my drink stayed cold as the day got hotter!! It was like having a mini fridge !! This is the best of both worlds! !!
    Date published: 2018-10-15
    Rated 5 out of 5 by from Love it! This is comparable with more expensive brands for your beverage needs. The design is sleek. It is much better quality then the off brands that are offered at Walmart or Kmart. I got a 21oz bottle. I will be looking to buy a larger one in the future.
    Date published: 2018-10-15
    Rated 5 out of 5 by from Ice cold for a very long time! I live in Florida and I bought these in several colors. When I received them, they seemed to work great but I wanted to put them to the test. So on the day the temperature was going to be 101 degrees, I took cold water and filled the bottle. I did not add any ice when I filled it. I put it in the car at about 9:00 am and left it in the car all day, some hours having the car parked in a non-air conditioned garage with all the windows closed. At 5:00 pm, we left to run an errand in the car. I took a sip from the bottle, and even though the bottle was extremely hot to the touch, the water inside of the bottle was as cold as it went into the bottle. I actually did a Facebook demonstration and measured the results with a thermometer. If this doesn’t convince you to try this, I don’t know what will. I highly recommend it, and in FL it’s a Godsend to be able to use this in the car. The bottle also cools off quick when you turn on the air conditioning.
    Date published: 2018-10-14
    Rated 5 out of 5 by from Absolutely love it This does not sweat, stainless steel BPA free with a comfortable grip. Keeps drinks cold for at least 24 hours and hot drinks hot for 12 hours. I used this to keep my keep my sweet tea cold. I put the tea in and it set out for hours and when I grabbed it again the tea was still cold as if it came right out the fridge. It is a little hard to clean and I would not put something like milk in it. But I absolutely love how it keeps my drink cold. To wash you simply put hot water and soap in in close it and shake it. I honestly recommend this to anyone who is in the market for a new bottle. Ireceived this free in exchange for my honest unbiased review.
    Date published: 2018-10-13
    Rated 5 out of 5 by from Favorite new water bottle! I've been using this water bottle for over a month now. It's my number 1 favorite cup ever! It keeps my drinks so cold and the ice never melts. I take it to work with me and because it holds a good amount of drink it lasts all day. I saved so much money on bottled drinks with this cup.
    Date published: 2018-10-13
    Rated 5 out of 5 by from Great bottle This is a very nice bottle for carrying around. It keeps cold drinks cold and hot drinks hot for a couple of hours. Its easy to keep with you and its very handy. It fits perfectly in my car cup holder. I would love to have a lid with a straw. This is great when on the go!
    Date published: 2018-10-13
    Rated 5 out of 5 by from Keeps beverages at right temperature! I recently received this bottle/flask and have been taking it with me every time I go to the gym. After a workout, having cool, not completely cold, water is so refreshing and gets me well re-hydrated. Usually I have to fill my previous bottle with cold water and by the time I finish my workout, it is just cool enough. But with this flask, I fill it with cool water and stays cool!
    Date published: 2018-10-13
    Rated 5 out of 5 by from Amazing product! I recently had the opportunity to try a Hydro Flask. I have tried many water bottles/beverage containers. This is like nothing I've ever tried. It keeps beverages hot or cold, its durable and leak proof. I love it!
    Date published: 2018-10-12
    Rated 5 out of 5 by from Amazing for keeping my drinks cold This bottle was exactly what I needed. It's great for anytime whether home or traveling. It keeps my drinks super cold for a very long time. The pretty Cobalt blue is a plus too! This is a perfect bottle for anyone of any age
    Date published: 2018-10-12
    Rated 5 out of 5 by from I'm impressed! The first time I used this, I filled it with coffee and rushed off to work...leaving it on the counter. I got hit with a double that day and by the time I got home, I was too tired to bother with it. When I went to dump it out...over 24 hours later...the coffee was STILL warm!
    Date published: 2018-10-12
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  • 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: 2018-07-13

    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
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