21oz Standard Mouth Water Bottle
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21oz Standard Mouth Water Bottle
With the Hydro Flask 21oz Standard Mouth Water Bottle, you're able to stay hydrated throughout the course of your work day. The 21oz easily fits in the side pocket of your backpack, shoulder bag, and your car cup holder, while the 18/8 stainless steel construction keeps your hot beverages hot up to 12 hours and your cold beverages cold up to 24 hours.
Details
- Stay hydrated throughout the day with this water bottle
- Stainless steel construction is highly durable
- BPA-Free and phthalate-free for your convenience
- Keeps beverages hot up to 12 hours
- Keeps beverages cold up to 24 hours
- Item #HYF001V
- Material
- 18/8 stainless steel
- Volume
- 21oz
- Lid
- Standard Mouth
- Manufacturer Warranty
- limited lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
4.5 based on 1059 ratings
Review Summary
Fits Slightly Large
Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.Customer Images
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Selecting an option will reload the available reviews on the pageMarch 17, 2025
New bottle
[This review was collected as part of a promotion.] This new bottle is fine. I had a previous bottle with a different sip lid that did require the straw. I would have preferred that lid again.
Originally reviewed on hydroflask.com
March 14, 2025
My daughter was very happy
[This review was collected as part of a promotion.] My daughter was very happy with the replacement after her original bottle broke at the cap.
Originally reviewed on hydroflask.com
March 11, 2025
Love it
[This review was collected as part of a promotion.] What a great color, love the initials too. I will be purchasing more.
Originally reviewed on hydroflask.com
March 7, 2025
Great Bottle
[This review was collected as part of a promotion.] Just the right size to take to work or school. All the pros of a larger hydro flask in a smaller size. Love it.
Originally reviewed on hydroflask.com
March 6, 2025
Lo recomiendo
Amoo. es color es bello, no pesa tanto y para lavarlo es super fácil
Originally reviewed on hydroflask.com
February 28, 2025
Perfect gift item
Bought this to replace the one that my daughter lost at her gym. Got this one engraved with her name and it turned out BEAUTIFULLY. There will be no mistaking ownership now. Well done, HydroFlask.
Originally reviewed on hydroflask.com
February 28, 2025
Daily use
[This review was collected as part of a promotion.] I have been using Hydro Flask for decades now. This one is no different in quality and performance and perfect size and color for me for my daily use. Especially to fill in morning and have cold beverage waiting in my car when I get off work, even on the hottest days.
Originally reviewed on hydroflask.com
February 27, 2025
Terribly leaky top
[This review was collected as part of a promotion.] Love Hydro Flasks in general, they’re so great at keeping my drinks hot or cold. This is a perfect size and shape for me. However, the new top leaks so often and I can’t figure out why. It’s not consistent either—happens probably every other morning, sometimes doesn’t leak at all. The days it does leak, it starts immediately and other times it happens later after I’ve been drinking my coffee.
Originally reviewed on hydroflask.com
February 17, 2025
Defective covers
[This review was collected as part of a promotion.] The cover does not secure - both bottles leak when using
Originally reviewed on hydroflask.com
February 8, 2025
Hydro Flask Lifer!
[This review was collected as part of a promotion.] I love hydro flask. I have many colors and wanted to add a nice pink shade to my collection. Reef is NOT PINK. Was very disappointed in the color. It appears to be pink online, but it is more of a dark mauve, faded purplish burgundy. *see photo
Originally reviewed on hydroflask.com
Do you have a question about this product?
August 17, 2021
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...
June 10, 2020
Will this size fit in a standard cupholder?
April 30, 2020
On the diagram (pictures) it say it can keep hot drinks up to 6 hour and in the text on the website it says up to 12 hours hot.... so which one is it?
March 26, 2020
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.
February 17, 2020
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?
January 26, 2020
Can I buy this online here
January 25, 2020
Can I use the lid with the straw for coffee in the standard mouth 24 oz bottle
December 27, 2019
Where is this bottle manufactured?
November 2, 2019
Is there a cap available for purchase that would allow me to use my standard mouth Hydro Flask 21oz with hot drinks? I purchased 2 hoping to use one for hot and the other for cold. However I have not been able to use hot drinks due to the cap. Frustrated
September 28, 2019
The jade color was available yesterday, but is not now. Will it be available again?
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