21oz Standard Mouth Water Bottle
Size:
Quantity
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 1198 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
Here's what customers have to say
The water bottle is widely praised for its excellent temperature retention, durability, and attractive design. Many customers highlight the product's high quality and note that it keeps drinks cold for hours. However, a few reviewers have reported issues such as dents, rust, and problems with the insulation. Some also found the product to be expensive compared to other options. Overall, the water bottle seems to be a highly regarded product that meets the needs of most customers, though a small number have experienced some problems.
AI-generated from the text of customer reviews.
View
Selecting an option will reload the available reviews on the pageJuly 11, 2025
Products are great, service is even better
[This review was collected as part of a promotion.] I always love Hydroflask. I’ve got almost 20 bottles/cups in the house between me and my family members. We’ve been loyal for 15+ years since a friend who sold the bottles as a rep gave me one to try. I keep buying them. This bottle was a warranty replacement and Hydroflask made it super simple and quick. Yes, sometimes products aren’t perfect. From there, it’s the company that decides if the customer will be satisfied. In my case, I am. And I’ll tell others too that the investment in a bottle is protected because Hydroflask stands behind it. I’m a loyal customer.
Originally reviewed on hydroflask.com
June 28, 2025
Sturdy and so well insulated
[This review was collected as part of a promotion.] He loves the flask . Keeps his water cool so much longer than other bottles .
Originally reviewed on hydroflask.com
June 17, 2025
Really great communication with warranty
[This review was collected as part of a promotion.] Really great communication with warranty replacement
Originally reviewed on hydroflask.com
June 3, 2025
Warranty Replacement
[This review was collected as part of a promotion.] This was a warranty replacement. The warranty process is so cumbersome it gives the impression it’s designed to frustrate to the point one gives up.
Originally reviewed on hydroflask.com
May 28, 2025
Love it!
[This review was collected as part of a promotion.] Strong, colorful, insulated! and works with my prior bottle lids, too!
Originally reviewed on hydroflask.com
May 11, 2025
Best Water Bottle Ever
[This review was collected as part of a promotion.] I love my hydro flask bottles and take them everywhere. My grandson gave me a sticker with the hydro flask logo with the comment, "I knew this was the water bottles you use so I thought you would like the sticker. "
Originally reviewed on hydroflask.com
May 10, 2025
Replaced rattling bottle
[This review was collected as part of a promotion.] Got a replacement container because my bottle started making a rattling sound. New one works well and is a nice color (old one was discontinued).
Originally reviewed on hydroflask.com
May 9, 2025
I am delighted with my
[This review was collected as part of a promotion.] I am delighted with my hydro flask And love the warranty that if it would loose its thermal insulation, you do replace the flask at no cost . Thank you
Originally reviewed on hydroflask.com
May 7, 2025
Great Product
[This review was collected as part of a promotion.] I love my Hydro Flask. My husband and I saw an ad in an airline magazine 10+ years ago. IMy Hudro Flask has been with me on countless hikes and adventures throughout the year. We have bought at least 8 and counting. The quality is second to none. It is great to know Hydro Flask stands behind their quality.
Originally reviewed on hydroflask.com
April 25, 2025
Durable
I have this bottle for couple years and I am still using and loving it. So handy I carry it with me all the time
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...
Originally reviewed on hydroflask.com
June 10, 2020
Will this size fit in a standard cupholder?
Originally reviewed on hydroflask.com
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?
Originally reviewed on hydroflask.com
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.
Originally reviewed on hydroflask.com
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?
Originally reviewed on hydroflask.com
January 26, 2020
Can I buy this online here
Originally reviewed on hydroflask.com
January 25, 2020
Can I use the lid with the straw for coffee in the standard mouth 24 oz bottle
Originally reviewed on hydroflask.com
December 27, 2019
Where is this bottle manufactured?
Originally reviewed on hydroflask.com
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
Originally reviewed on hydroflask.com
September 28, 2019
The jade color was available yesterday, but is not now. Will it be available again?
Originally reviewed on hydroflask.com