Medium Flex Boot
$7.95

Medium Flex Boot

Medium Flex Boot is rated 4.6 out of 5 by 473.
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$7.95
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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

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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
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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:

  • 151 Nonprofits supported nonprofits.
  • $2.5 million Dollars donated donated.
  • 68,822 Bottles donated bottles.
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Reviews
Rated 5 out of 5 by from Great! I love using this on my water bottle. It makes it much quieter when placing it on tables, and it prevents it from sliding around. It also protects other objects from the metal of the bottle, especially when being carried around.
Date published: 2022-08-16
Rated 5 out of 5 by from Amazing product! Just ordered one of these for my hydro and I love it so much. Hydroflask even sent me an extra one for free! Love this company!
Date published: 2022-08-04
Rated 5 out of 5 by from Get one Perfect fit and looks great. I won't use a stainless steel flask without a boot - great cushioning and gripping.
Date published: 2022-07-29
Rated 5 out of 5 by from the flex boot is great! I would definitely suggest getting the boot accessory for it so it won’t get scratched up too much on the bottom!
Date published: 2022-07-20
Rated 5 out of 5 by from I put this on all my Flasks I put this on all my Flasks. Great quality and delivered quickly.
Date published: 2022-07-18
Rated 5 out of 5 by from Love it! Love it! When I put my water bottle down it doesn’t make a sound it’s sounded ful
Date published: 2022-07-16
Rated 5 out of 5 by from Love the boot! Love this boot for my hydro flask!! You set it down and it’s quiet and you aren’t messing up your beautiful hydro flask!!
Date published: 2022-07-15
Rated 5 out of 5 by from Hydro Flask safe from falls. Great product if you plan to use your Hydro Flask everyday. Insures your bottle stays in perfect condition for many years.
Date published: 2022-07-03
Rated 5 out of 5 by from Favorite accessory! Love this little boot! It keeps my bottle in place and keeps it from clanking when you set the bottle down!
Date published: 2022-06-28
Rated 5 out of 5 by from Must have accessory!!! Love this new option. Most of the bottles our family has (4 daughters) are dented around the bottom edge. This boot makes a huge difference and my girls like that the the color matches the bottle.
Date published: 2022-06-20
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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:

  • 151 Nonprofits supported nonprofits.
  • $2.5 million Dollars donated donated.
  • 68,822 Bottles donated bottles.