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Does it fit on the 21oz Hydroflask bottle?
If you have the standard mouth hydroflask, yes it will fit..does not fit wide or narrow mouth bottle
Yes I purchased it for the 21oz bottle that I just bought and it fits perfectly. If you plan on using the straw, you will have to shorten it.
According to the description it should but I do not have one. I use it on a Klean Kanteen and it is the best! I bought 3 more to go on my children’s smaller sized Kanteens and I just cut the straw. Still great and easy to open and close.
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