64oz Wide Flex Straw Cap Water Bottle
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64oz Wide Flex Straw Cap keeps hydration accessible and spill-free
What Our Gearhead® Experts Are Saying:
"Whether I’m on a day-long trail or lounging at the beach, this bottle ensures I have cold water within arm’s reach. The straw cap makes sipping effortless, and the durable construction keeps it adventure-ready."
We’ve relied on Hydro Flask’s 64oz Wide Flex Straw Cap bottle to fuel our adventures, from marathon road trips to multi-pitch climbs. Its stainless steel construction and TempShield insulation keep drinks icy cold for hours, even under blazing sun. The 64oz capacity lets us stay hydrated longer, reducing refill stops and keeping us focused on the journey ahead.
The bottle’s wide mouth makes it easy to add ice, while the straw cap offers quick, spill-free hydration during any activity. The leakproof design ensures we can toss it in the car or pack without a second thought. Built tough and designed to keep up, this bottle is as essential as the trail map in our pack.
Details
- 64oz water bottle for all-day hydration on adventures
- TempShield insulation keeps drinks cold for up to 24 hours
- Wide mouth allows for easy ice addition and cleaning
- Durable stainless steel construction resists wear and tear
- Flex straw cap provides effortless sipping and spill-free performance
- Leakproof design ensures easy transport in bags or car
- BPA-free and phthalate-free for safer hydration
- Perfect for hiking, camping, road trips, and more
- Item #HYFZ05Z
- Material
- stainless steel
- Volume
- 64fl oz
- Valve
- Flex Straw
- Dimensions
- 4.65 x 12.4in
- Claimed Weight
- 1lb 11.1oz
- Activity
- casual, hiking
- Manufacturer Warranty
- limited lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
4.5 based on 387 ratings
Review Summary
Customer Images
Here's what customers have to say
The water bottle has excellent insulation that keeps drinks cold for extended periods. The large 64oz capacity is a key benefit, allowing users to stay hydrated throughout the day. The durable construction and sleek design are also positives. However, some customers have reported inconsistent quality, with issues like reduced insulation or problems with the lid and straw. A few were also disappointed with the color not matching the online description. Overall, the water bottle is considered excellent by most customers, with its impressive thermal performance, generous size, and reliable construction making it a popular choice.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageOctober 25, 2025
Not as good as they used to be
[This review was collected as part of a promotion.] I recently ordered two of the 64oz bottles. One of them keeps the water cold with minimal melting for several days. The second flask I ordered of same size does not keep the water cold for 24 hours, more like 12 hours and the Ice rapidly melts. This has happened with a smaller bottle I recently ordered as well. Seems to be hit or miss on how well they work. I am a frequent customer and the quality is definitely going down. May have to try a different company
Originally reviewed on hydroflask.com
October 23, 2025
Hydro Flask
[This review was collected as part of a promotion.] Received 64 oz bottle, love it. Finallt water does not have any strange after taste. Love the color. Thank you!
Originally reviewed on hydroflask.com
October 19, 2025
Love it!
[This review was collected as part of a promotion.] The color is so cute and my water stays cold. I love to take it to work to help me drink more water and to the gym.
Originally reviewed on hydroflask.com
October 14, 2025
Love This
[This review was collected as part of a promotion.] I'm really happy with the size and ease of using this water bottle. I purchased it for long card rides with my family and have been really thankful for the extra oz's.
Originally reviewed on hydroflask.com
October 14, 2025
Concern About Recent Hydro Flask Quality Issues
[This review was collected as part of a promotion.] Hi Hydro Flask Team, I’ve been a loyal Hydro Flask user for almost eight years and have always raved about the quality of your bottles. I recently bought one for my boyfriend because I’ve had such great experiences with mine over the years. Unfortunately, within the first week, the straw lid began making a loud noise every time it was used. I tried all the usual fixes — removing and twisting the straw, cleaning, etc. — but nothing worked. It also leaks heavily when it’s laid on its side, even briefly. I figured it might have been a one-off issue, but not long after, my boyfriend bought me a new Hydro Flask to replace my five-year-old one (which still works great, just dented). This new bottle looks beautiful, but it doesn’t hold cold water for more than a couple of hours — unlike my older one, which keeps drinks cold overnight. I truly love your products and have always recommended them to others, so it’s disappointing to experience these issues with two new bottles in a row. I’m not sure if these were faulty batches or if the quality has changed, but I wanted to reach out to share my experience and see if there’s anything that can be done.
Originally reviewed on hydroflask.com
October 14, 2025
64 oz of purple fun!!!!
[This review was collected as part of a promotion.] I love this flask!!!! Beachplum purple is purple enough for me!!!! I've been inquiring about a 64 oz purple hydro flask and now, I have one!!!!! It's great! I don't have to refill it often and my water stays cold, just the way I like it! I now own two growlers. Thanks a bunch!!!!!
Originally reviewed on hydroflask.com
October 10, 2025
Leaky lid
[This review was collected as part of a promotion.] Love the size of the bottle and having a straw. But it leaks from the small hole where the straw sits flat.
Originally reviewed on hydroflask.com
August 27, 2025
It’s good for long trips
[This review was collected as part of a promotion.] It’s good for long trips and keeps the hot water , hot all day. And cold drinks are the same too .
Originally reviewed on hydroflask.com
August 26, 2025
Straw problems
[This review was collected as part of a promotion.] On the 64oz bottle, the straw doesn’t work unless it’s in the EXACT RIGHT position. And it doesn’t really stay there, so you have to hold it in place if you want to drink. Had I know, I never would have bought this model. I’m a big hydroflask fan and have owned and own many other bottles. But this 64oz has a major flaw.
Originally reviewed on hydroflask.com
August 18, 2025
LOVE IT!
[This review was collected as part of a promotion.] Buying this larger bottle worked perfectly, it is forcing me to drink far more water than before due to its larger size. Nice handle on it for easy carry and the cap is a breeze to use and clean.
Originally reviewed on hydroflask.com
Do you have a question about this product?
November 9, 2022
Is the new flex chug cap compatible with this 64 oz bottle?
Originally reviewed on hydroflask.com
August 16, 2022
does someone manufacture a boot for this bottle?
Originally reviewed on hydroflask.com
August 15, 2022
Is it lead-free? Is there a coating in the bottle?
Originally reviewed on hydroflask.com
August 3, 2022
Why there is no baby blue "Frost" color for the wide mouth 40oz bottle ?? :( Can't even request a customize order.
Originally reviewed on hydroflask.com
August 31, 2021
When will you bring back customizable 64oz wide mouth bottles? I have to replace my current customized one (dropped too many times and so many dents and paint chips) but I need something that stands out! These colors are so muted :(
Originally reviewed on hydroflask.com
April 24, 2021
Will the 64 oz bottle for in the car cup holder?
Originally reviewed on hydroflask.com
August 7, 2020
How well does the spearmint color Chroma out? I really want to be able to make my drink disappear on camera in my zoom meetings
Originally reviewed on hydroflask.com
July 10, 2020
Just upgraded to the 64oz Hydro and am looking for a Hydro boot. Where can I order it?
Originally reviewed on hydroflask.com
May 28, 2020
I love the product but will the paint come off or chip
Originally reviewed on hydroflask.com
February 2, 2020
Does it come with the lid as shown in the picture
Originally reviewed on hydroflask.com