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 4.8 out of 5 by 268.
    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
    Rated 5 out of 5 by from Hrydro Flask 21 The Hydro Flask 21 has been fabulous the past few weeks. Beverage remained cool for a long period of time. I was worried that there might be a metallic flavor but as glad to find that there was not. Flask color- yellow- was bright and fun!
    Date published: 2018-10-12
    Rated 5 out of 5 by from Excellent flask This is an excellent hydro flask. It is made of good, sturdy material. It kept my drinks cold while in the hot sun. I also liked the colors offered to buy the flask in. I would recommend this flask to anyone who wants to enjoy the outdoors and stay hydrated.
    Date published: 2018-10-12
    Rated 5 out of 5 by from Yes! I am a huge coffee drinker and need my coffee to stay warm all day. I am a mom and I work so having a hot cup of coffee and sometimes impossible. I was able to try this product out, and I have to say it does exactly what it says it does. I'm able to fill my cup up in the beginning of the day and by the afternoon it is still warm. I have only used it for coffee and have loved having it by my side all day. If you are on the go the majority of the day this is what you need.
    Date published: 2018-10-12
    Rated 5 out of 5 by from Great bottle! I received my Hydro Flask a few weeks ago. I very surprised with how well made it was. I’ve taken it to work several times. It always keeps my ice tea very cold even after several hours. It is very well made and sturdy. I love it!
    Date published: 2018-10-12
    Rated 5 out of 5 by from Gym water bottle go to I actually have a million water bottles and this is my go to because I like my water extra cold, especially when I’m working out, and this keeps the water very cold for a long period of time. I really like the look too!
    Date published: 2018-10-12
    Rated 5 out of 5 by from Love it! I received this bottle for free to review. I absolutely love it. It keeps my water super cold and refreshing! I highly recommend this for workouts, hiking, day trips, etc. . My only issue is that my daughter loves it so much that it will probably disappear!! Definitely recommended
    Date published: 2018-10-12
    Rated 5 out of 5 by from Love my cup Love my new cup. I have a collection of cups. This is one of my favorites. Love the color and keeps my drinks cooler longer. I would recommend this product to anyone. The product is a good size. My favorite cup by far!
    Date published: 2018-10-12
    Rated 5 out of 5 by from I love this water bottle! I bought this for my sister for Christmas last year, and she loves it so much, and now I have my very own. This water bottle is ridiculously gorgeous/stylish - so much so that I think I'm drinking more water now just because I want to carry it with me everywhere I go. It's a great size and weight and seems very durable.
    Date published: 2018-10-12
    Rated 5 out of 5 by from Great bottle! Good size. Bright vibrant color. At first it had a slight metallic taste/smell but after several washings it resolves. I wish it was dishwasher safe but otherwise it’s great. Keeps cold drinks cold and hot drinks hot.
    Date published: 2018-10-12
    Rated 5 out of 5 by from Awesome bottle! My family and i are in love with the hydro flask bottle!! It keeps our water cold with ice still there for almost 24 hours!! We are able to use it to send to school with our daughter knowing that she will have ice cold water all Day! Very strong and sturdy!
    Date published: 2018-10-12
    Rated 5 out of 5 by from Best Bottle Ever This bottle is great! I cannot believe how long it keeps my beverages cold. I left it in my hot car for 8 hours and came back to ice water. It is also very tough. My kids have dropped it on concrete and it did not dent and had no leaks. Great product!!
    Date published: 2018-10-12
    Rated 5 out of 5 by from Haven't been without it! I got this too try and now I am in love and obsession. I take it everywhere and fortunately it works for either cold or hot drinks. I love the turquoise color and the thick top strap. People have asked where I got it... Fun to be there trend setter!
    Date published: 2018-10-12
    Rated 5 out of 5 by from Amazing water bottle I recently started using this and could not have been happier. I have to drive a lot and was always worried about carrying water in plastic bottles and leave them in the car. Not only the material of this bottle is awesome, it retains the water temperature quite well. The bottle looks very stylish and I have been asked by people in my gym on where I got it from. It’s wonderful to finally have a water bottle that keeps the water cool for hours.
    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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