Medium Flex Boot
$7.95

Medium Flex Boot

Medium Flex Boot is rated 4.2 out of 5 by 86.
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$7.95
Size Chart
Hydro Flask Pack Size Chart
Available Sizes S / M M / L
Torso
Measurement
18 - 19 in 19 - 22 in
43 - 48 cm 48 - 56 cm
Hip
Measurement
22 – 46 in 26 – 46 in
56 – 117 cm 66 – 117 cm
  1. 1. Torso Measurement

    • A. Bring your chin to your chest and feel for the most prominent bony bump where the slope of your shoulders meets the back of your neck. This is your C7 vertebra, and the top of your torso measurement.

    • B. On each side of your body, feel for the top of your hip bones, just below the sides of your ribs. With fingers pointing forward and thumbs pointing backward, draw an imaginary line between your thumbs. This is the bottom of your torso measurement.

    • C. Stand up straight and have a friend with flexible measuring tape measure the distance between your C7 vertebra and the imaginary line between your thumbs. That’s your torso measurement. If you are between pack sizes, go with the smaller size.

  2. 2. Hip Measurement

    While your torso measurement is the best indicator of your pack size, it’s still important to check your hip size when using a hipbelt. To find your hip measurement, wrap a flexible tape measure around the top of your hip bones, just below the sides of your ribs. This measurement is slightly higher than your waistline

Medium Flex Boot | Hydro Flask
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Colorful protection.

Make your Hydro Flask your own with a colorful, durable silicone Flex Boot. Customize your look and protect against bumps and dings.

Medium boot fits 32 and 40 oz wide mouth bottles.

If your bottle is smaller than 32 oz, check out the Small Flex Boot here!

Product Benefits

  • Removable, silicone boot adds extra protection to your Hydro Flask
  • Medium boot fits 32 and 40 oz wide mouth bottles
  • Medium boot is not compatible with 32 oz Lightweight Wide Mouth Trail Series bottles
  • BPA-Free
  • Lifetime Warranty
Technology
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Lifetime Warranty
Lifetime Warranty

We stand behind our products.

Hydro Flask guarantees this Hydro Flask product with a limited lifetime warranty against manufacturer defects.

Wide Mouth Compatible
Wide Mouth Compatible

Mix and match.

Compatible with all Wide Mouth products for ultimate versatility.

Let's Go!

Today is wide open. You lead, we'll follow.

#HeyLetsGo

Hydro Flask supports non-profit organizations focused on building, maintaining, restoring, and providing better access to parks. Since 2017, we have been doing just that:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars donated donated.
  • 26,043 Bottles donated bottles.
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Reviews
Rated 5 out of 5 by from Helpful Makes my hydroflask quiet and dent free! It also prevents slipping
Date published: 2020-10-29
Rated 5 out of 5 by from Boot - great! Love that it protects the bottom of the hydroflask.
Date published: 2020-10-26
Rated 5 out of 5 by from Do the job ! Fits perfect and protects the bottom of my hydroflask like a champ
Date published: 2020-10-19
Rated 5 out of 5 by from A quality product! The quality of this product is outstanding. It help keeps my bottle safe, and the surfaces clear of dents and dings.
Date published: 2020-09-08
Rated 5 out of 5 by from Love it This is great. Protects the flask from scratching, doesn’t slide.
Date published: 2020-08-19
Rated 5 out of 5 by from I love it !! I love that you don’t have to worry about my hydro flask to tipping over with the boot is secure.
Date published: 2020-07-27
Rated 5 out of 5 by from Love it, but one critique I bought this as soon as I replaced my previous Hydro Flask, which was dented from not owning the Flex Boot. I love this boot! My bottle, which I have owned for 6 months now, has not been dented once due to this boot. My only wish is that there were more color options, especially if there were matching colors to each color bottle.
Date published: 2020-06-30
Rated 5 out of 5 by from Great product This product helps maintain my water bottle stable and not get all dinged up.
Date published: 2020-06-13
Rated 5 out of 5 by from I LOVE IT This boot has come in handy more times than I can ding
Date published: 2020-05-21
Rated 5 out of 5 by from Great insurance policy. I bought the boot a month ago and wish I had bought it sooner. Totally protects my flask. Highly recommend.
Date published: 2020-05-20
Rated 5 out of 5 by from Highly recommend I've had two hydroflasks in the past 3 years, and I got a flex boot for my most recent (which I've had for a year or so). I was hesitant at first, as I didn't know if it was truly necessary, but I'm glad I did. It prevents the normal annoying clanging sound when placing it on a table, and also prevents it from sliding around. The main reason I bought it is because I go on a lot of runs and put my bottle down on rough rocks and roads almost daily. And the boot has protected it from all scratches and dents. You should definitely get it!
Date published: 2020-04-29
Rated 5 out of 5 by from Super cute add on that has a purpose I love my hydroflask. I got the 32 oz watermelon color one and got the yellow boot with it and I adore the color combo. The boot definitely is a great add on for working out, in the car traveling and on desks. It keeps the bottle from moving. It is very sturdy and does not stain!
Date published: 2020-03-21
Rated 5 out of 5 by from Keeps everything super cold! I bought a 32 oz. hydro flask a couple weeks ago and I’m so happy with it. It keeps my water super cold and it’s the perfect size for me I usually only have to refill once everyday. There is one downside though it is quite easy to dent or scratch them I one at the bottom from dropping it on my hardwood floor. But otherwise I would overall recommend this product.
Date published: 2020-03-19
Rated 5 out of 5 by from Great addition I love love this new addition. No loud banging sounds every time I knock it against something.
Date published: 2020-02-07
Rated 5 out of 5 by from Amazing and super cute I bought this a few weeks back . And I love it ! It keeps my hydro from tipping over , moving around, and protects the bottom from getting scratched . And it’s a beautiful color . My son too had a kids hydro and those come with boots and he hasn’t tipped it over not once.
Date published: 2020-02-03
Rated 5 out of 5 by from Snug Fit The boot fits great and doesn’t slide around or dismount. It’s extremely easy to clean.
Date published: 2020-01-20
Rated 5 out of 5 by from Rad This is a awesome idea. The bottle of bottles like this always get dinged up. It’ll keep that coating nice and clean for years to come
Date published: 2019-12-05
Rated 5 out of 5 by from Perfect fit and functionality Fits perfectly Love the color match Little hole in base for drainage Keeps the bottle and other things from getting scratched.
Date published: 2019-11-24
Rated 5 out of 5 by from It's great! Does what it's supposed to. I was tired of too many dents along the bottom edge of my hydro flask, so this boot is great for preventing that.
Date published: 2019-11-21
Rated 5 out of 5 by from Hello I bought this a month ago and I’m so glad I did because this boot helps my water bottle not get dented
Date published: 2019-11-10
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Questions

Does the medium boot fit the 22oz tumbler?

Asked by: Amanda0303
Hello, I do apologize for the longer response time! No, none of the tumblers fit in the bottle slings.
Answered by: Consumer Service
Date published: 2020-11-05

Does this boot fit the 22 ounce tumbler?

Asked by: mamabyb
Hello, I do apologize for the longer response time! None of the boots fit the tumblers!
Answered by: Consumer Service
Date published: 2020-11-05

Does your small boot fit the coffee bottles size 16 oz or 20 oz?

Asked by: Agortmans
Hello, I do apologize for the longer response time! Yes, any bottles up to 24oz.
Answered by: Consumer Service
Date published: 2020-11-05

Is this boot compatible with the Lightwieght Series Hydroflasks?

Asked by: Adam L
We apologize for the delayed response. The small bottle boot will only fit the 24 oz lightweight trail series flask. There is no bottle boot that will fit the 32 oz lightweight trail series flask.
Answered by: Consumer Service
Date published: 2020-11-05

What color would match the Hibiscus 40 oz bottle?

Asked by: hannah h
Hello, I do apologize for the longer response time! That would be up to the type of colors your interested in! Its completely up to you!
Answered by: Consumer Service
Date published: 2020-11-05

What color would you recommend to go with Fog? I'm having trouble deciding

Asked by: Maxine9935
I would recommend black. I feel like black goes with anything.
Answered by: Consumer Service
Date published: 2020-11-05

I’m really clumsy and have already dropped my Hydro flask... whoops. The bottom dented and it doesn’t stand flat anymore. I’m wondering if this boot will even it out (keep it from wiggling), or just protect it from further dents?

Asked by: Bree
My son bought a boot for his just for this purpose and yes, it stabilized his bottle even better than when new. The “grippy-ness” this provides keeps it from scooting or tipping easily, protects from future dents and the bonus is it seems to make it a bit more quiet and even slightly help insulate (hubby is an electrician and noticed that when he has to set down on particularly hot pavement of any kind, this helped his Hydro perform like it did when working inside - works fine without the boot & still stays cold... he’s just noticed that on hot surfaces more ice would melt than normal, but not after adding this). 
Answered by: Jenyfurrr
Date published: 2020-08-30

Do the current boots fit the new curvature of the bottom of the new bottles (with the longer necks?).

Asked by: jackie020
I saw a similar question elsewhere that they said yes, it fits the new shape. Someone else had asked if they were going to redesign or release a new version for those and Customer Service said there are no plans to add/redesign because these fit the new design. 
Answered by: Jenyfurrr
Date published: 2020-08-30
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Hydro Flask supports non-profit organizations focused on building, maintaining, restoring, and providing better access to parks. Since 2017, we have been doing just that:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars donated donated.
  • 26,043 Bottles donated bottles.