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Details & care
This leakproof, insulated cap and straw fit your favorite Hydro Flask Standard Mouth bottle (sold separately).
- includes 2 straws, 1 cap
- Compatible with Hydro Flask Standard Mouth bottles (sold separately)
- BPA-free
- Plastic
- Dishwasher safe
- Imported
- Item #7144185
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Hydro Flask
Headquartered in Bend, Oregon, Hydro Flask launched the first all-insulated bottle in 2009 and has spent the last 10 years delivering on its commitment to save the world from lukewarm.
Most helpful positive review
May 8, 2026
Great straw cap
[This review was collected as part of a promotion.] So far it’s been great. Was able to cut the straw to fit my bottle perfectly. Doesn’t leak and fits well on the bottle
Belinda P.
Reposted from hydroflask.com
Most helpful critical review
Oct 6, 2025
Still not correct item
[This review was collected as part of a promotion.] What's the point of sending me these? Customer retention is clearly not the goal. If so, you would offer to correct the issue from the beginning by acknowledging the lack of function in these caps. I won't risk buying the other bottles for kids knowing how poorly these work.
Michelle M.
Reposted from hydroflask.com
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5 stars
62%
4 stars
12%
3 stars
13%
2 stars
6%
1 star
7%
Sort by Most Helpful
Belinda P.
Reposted from hydroflask.com
May 8, 2026
Great straw cap
[This review was collected as part of a promotion.] So far it’s been great. Was able to cut the straw to fit my bottle perfectly. Doesn’t leak and fits well on the bottle
Anonymous
Reposted from hydroflask.com
May 8, 2026
My Kids Love this Lid
[This review was collected as part of a promotion.] It's easier to use, and hopefully doesn't break as easily as the original style of lid.
Andre S.
Reposted from hydroflask.com
May 7, 2026
Easy Upgrade for Everyday Use
I swapped to this flex straw cap and it’s made drinking from my bottle so much more convenient, especially when I’m on the move.
Carole D.
Reposted from hydroflask.com
Apr 29, 2026
works, but. . . .
[This review was collected as part of a promotion.] This replaces the same cap that I had for 2 years. It was getting a bit yucky so I decided to replace it and ordered the same cap. The old cap never leaked but this new replacement cap does leak. I have done all the things, tried all the things and if my bottle gets sideways in my bag/backpack, it will leak. I will probably end up ordering a new cap and hopefully it won't have the same issue.
Priscilla R.
Reposted from hydroflask.com
Mar 24, 2026
Had to have another
[This review was collected as part of a promotion.] I had two Hydro flasks, but only on flex straw cap, They're totally worth it, I had to have another!
Janette B.
Reposted from hydroflask.com
Feb 20, 2026
Appreciate the warranty replacement. Nice
[This review was collected as part of a promotion.] Appreciate the warranty replacement. Nice lid. Like that I don’t have to use the straw.