Medium Flex Boot
Make your Hydro Flask your own with a colorful, durable silicone Flex Boot. Customize your look and protect against bumps and dings.
Please note: the medium boot does not fit the 32oz Trail Series.
If your bottle is smaller than 32 oz, check out the Small Flex Boot here!
Small Flex Boot
If your bottle is bigger than 24 oz, check out the Medium Flex Boot here!