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Hydro Flask
Wide Mouth Flex Cap

4.231543624161074 out of 5 stars
298 Reviews
$9.95
Color:Black

Size:

Quantity


Wide Mouth Flex Cap

The last time you saw your water bottle's original cap, it was falling down a desert tower. Instead of searching the sands, replace it with Hydro Flask's Wide Mouth Flex Cap. Its stainless steel construction includes Honeycomb insulation to help you drinks stay cold or hot longer. The flexible loop is durable and convenient for hikes and bikes to summer concerts.


Details

  • Water bottle cap fits Hydro Flask Wide Mouth bottles
  • Stainless steel construction with Honeycomb insulation
  • Flexible loop ideal for outdoorsy adventures
  • Item #HYF001S
Material
stainless steel
Manufacturer Warranty
lifetime

What do you think about this product?

Overall Rating

4 based on 298 ratings

Review Summary

1 Stars - 30 reviews
2 Stars - 16 reviews
3 Stars - 20 reviews
4 Stars - 21 reviews
5 Stars - 211 reviews

Customer Images

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5 out of 5 stars

April 15, 2025

Flex Cap!!!!

[This review was collected as part of a promotion.] The flex cap is the best!!!! No sure why I didn’t purchase before.

Carmen H.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

April 6, 2025

Exactly what I wanted

[This review was collected as part of a promotion.] My wide mouth bottle came with the straw lid and I didn't want to have to clean it so I switched it out for this lid. Perfect!

Diane M.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

April 3, 2025

So appreciate the service, warranty

[This review was collected as part of a promotion.] So appreciate the service, warranty & overall product!

Jamie D.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

April 2, 2025

Color Not as Shown on Website

[This review was collected as part of a promotion.] Color was not as shown on website. Phantom is not medium purple. It is very dark purple. Disappointed. Other than color, product is great.

Margaret W.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

April 1, 2025

Hydroflask Growler = Wide Mouth Flex Cap

[This review was collected as part of a promotion.] I have one of the original 64 oz. Hydroflask Growlers (1. 9L) which was leaking because of a cracked lid. The material for the replacement is different than the original lid and much more sturdy. I have no doubt it will last as long as the growler.

Andrea M.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

March 28, 2025

Love it!

[This review was collected as part of a promotion.] I’ve been looking for a versatile 30+ ounce bottle for long trips.

Theresa M.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

March 27, 2025

Best warranty

[This review was collected as part of a promotion.] Love hydorflask warranty, so I motivated to buy a new one. The flask lives to what is expected to do and I also bought their 'water bottle sling', which was helpful at work, since I move around alot.

Rogemar B.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

March 13, 2025

Beautiful lid with a solid

[This review was collected as part of a promotion.] Beautiful lid with a solid and bright O-ring. I love it.

Alexander T.
hydroflask.com

Originally reviewed on hydroflask.com

1 out of 5 stars

March 6, 2025

Doesn’t fit wide mouth bottles

The threads on these caps are not done correctly. I tried putting them on several different wide mouth bottles and they would not seal. They DO NOT fit wide mouth bottles and just grind and don’t seal as you try to screw them on. Complete waste of money, please fix!!

Jon
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

February 13, 2025

Easy to clean

[This review was collected as part of a promotion.] Easy to clean and maintain, with 24-hour hot water to keep you warm The life warranty is real, highly recommended!

Marianah H.
hydroflask.com

Originally reviewed on hydroflask.com