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Hydro Flask
Standard Flex Straw Cap

4.15884476534296 out of 5 stars
277 Reviews
$14.95
Color:Black

Size:

Quantity


Hydro Flask Standard Flex Straw Cap

The Hydro Flask Standard Flex Straw Cap fits on standard mouth bottles to help avoid leaks so that we can enjoy ice-cold water while on the go.


Details

  • Durable construction handles daily use and cleaning
  • Compatible with standard mouth Hydro Flask bottles
  • Item #HYFZ02O
Material
polyproplyene (BPA-free)
Compatibility
Hydro Flask standard mouth bottles
Activity
hike, camp, training, casual
Manufacturer Warranty
limited lifetime

What do you think about this product?

Overall Rating

4 based on 277 ratings

Review Summary

1 Stars - 20 reviews
2 Stars - 15 reviews
3 Stars - 37 reviews
4 Stars - 34 reviews
5 Stars - 171 reviews

Customer Images

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1 out of 5 stars

March 28, 2025

Leaky Hydro flask top, do not buy!

[This review was collected as part of a promotion.] I am very unhappy with it, it leaks all over the place, and I think I need to return it

Erin B.
hydroflask.com

Originally reviewed on hydroflask.com

3 out of 5 stars

March 27, 2025

You have to have the

[This review was collected as part of a promotion.] You have to have the straw in the perfect position for it to work. Also, based on how they direct you to cut the straw, you end up having to unscrew/take off the top in order to get about the last 6 oz or so of water. Also, it would be nice to have a non-plastic straw.

Sarah H.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

March 19, 2025

Go back to pull tops!!!

[This review was collected as part of a promotion.] I don't care for this straw top because it is difficult to get liquid from my bottle once it is down to a certain level. You need to tilt it. Also the straw still tastes like plastic after many washings.

Lisa V.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

March 3, 2025

Best Caps for My Hydro Flask Bottles

Love the handle addition! My old ones had none. Both caps are easy to drink from and they are water tight, no leaking, and easy to clean!

Garry C.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

February 25, 2025

Great gift

I bought this for my dad who is constantly on the go. The sleek design allows it to fit into any car, any backpack; any suitcase without a problem. Keeps the water cold all day; great affordable, and usable gift!

Emma P.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

February 13, 2025

Good unit

[This review was collected as part of a promotion.] Nice straw,no leaking carry handle and much more sanitary than the pop up variety.

Karen C.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

February 5, 2025

I don’t understand how the

[This review was collected as part of a promotion.] I don’t understand how the straws are supposed to be usef

Jennifer B.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

February 4, 2025

My go to mug!

[This review was collected as part of a promotion.] I sadly lost my last trusty hydro flask on a flight. I got this new cup with the straw and another lid to use it for hot and cold. It's perfect!

Carly P.
hydroflask.com

Originally reviewed on hydroflask.com

4 out of 5 stars

January 30, 2025

Good cap, easy to clean. Small straw, tiny lever.

[This review was collected as part of a promotion.] So far, I like this cap quite a bit. I really appreciate that it doesn't have a recessed gasket like the wide-mouth ones, which makes it a lot easier to take apart for cleaning. The newer wide-mouth ones are annoying to open because there's no place to grip to twist, but my hand goes around the narrow-mouth ones so for me they're easy to open. (I do miss the gripping ring on the older ones). Notable downside 1: The straw is much narrower than on the wide mouth version. It's significantly slower to drink from. Downside 2: The little lever op top to pull it open is small and vertical. This makes it less efficient as a lever, and also it's less obvious which direction the cap is facing by touch. (This doesn't seem like a big deal, but over the course of a whole day it is slightly annoying)

Ashley P.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

January 29, 2025

Thanks a lot for sending

[This review was collected as part of a promotion.] Thanks a lot for sending me this cap. It's much better to drink while you are walking.

Cristina M.
hydroflask.com

Originally reviewed on hydroflask.com

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Learn more about Standard Flex Straw Cap