Hydro Flask Wide Mouth Flex Cap

Item No. 81049702689

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Product Description

Maximum Insulation.
The Wide Mouth Flex Cap is designed for ultimate portability and easy-carry comfort. Insulated flexible and built to last.

  • Compatible with all Wide Mouth bottles
  • Honeycomb insulation™ helps keep cold drinks cold and hot drinks hot
  • Durable stainless steel pivots allow the strap to move easily
  • BPA-Free and Phthalate-Free
  • Lifetime Warranty

Customer Reviews

2.7 / 5.0
40 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 1 out of 5
stoped fitting bottle
i bought this a few months ago and the kid was fine but now it doesn’t fit on the bottle it was bought with. it just here’s jammed.
April 27, 2020
Originally posted at
Rated 1 out of 5
Gasket gone.
I bough this recently to be able to travel with 20 oz hydro flask. It leaks if not sitting straight up. and when I take off the cap to take a sip it leaks All over me.
February 7, 2020
Originally posted at
Rated 5 out of 5
Are these lids now dishwasher safe? I saw the new wide mouth bottles are now dishwasher safe?
January 21, 2020
Originally posted at
Rated 3 out of 5
Use the Warranty
I bought after Christmas and the strap broke off the second time using it.
January 17, 2020
Originally posted at
Rated 5 out of 5
Does this lid fit 20 ounce wide mouth coffee bottle
January 10, 2020
Originally posted at
Rated 1 out of 5
smells so bad
i was so excited at first to have a reusable bottle to keep my water cold for long periods but now I feel stupid for buying this product.. I should've read the reviews first. The lid design is horrible. The bottle leaks, and it's almost impossible to take that rubber gasket out to clean it thoroughly. oh well, lesson learned I guess
December 27, 2019
Originally posted at
Rated 3 out of 5
Silicon ring keep falling out
Within 6 months of using the brand new flask, The silicon ring inside the cap keep falling out particularly after fill the flask with hot water / coffee. Even though I have been catching it and carefully put it back, I eventually lost it. Because of the silicon ring is the key to keep the seal, my flask is now leaking if I lay down the flask. very annoying. To solve the problem, I have to buy a new cap...
November 30, 2019
Originally posted at
Rated 5 out of 5
no leaks,great color,good for sports
i just bought this for my lemon hydro flask. the color looks so good with lemon because i bought the watermelon cap. it use to always leak in a bin at vollyball now there is never a drop of water at the bottom of the bin
November 22, 2019
Originally posted at
Rated 4 out of 5
Love but.
I bought this bottle maybe a year ago. I must say that I really loved it and it keeps the water fresh and cool for a very long time even during hot weathers. I must say that I stopped using it cause of the lid. I notice few black particurls in the water and I guess it is from the rubber of the lid. I don't know what to do for it. Is it normal that it is happening?
October 3, 2019
Originally posted at
Rated 1 out of 5
Gasket too difficult to remove
I purchased a bottle and selected this type of cap, it is very difficult to clean, you almost need a special tool to remove the gasket to clean it. I emailed the company about this months ago and they never replied
September 11, 2019
Originally posted at