First off, in spite of the number of bottles this cap is supposed to fit, it didn’t fit any of my bottles. Since I can’t return it without paying shipping I’ve opted to try out a Klean Kanteen classic. There are no measurements in the description for bottle mouth size so buying it was a gamble. It seems like it will work well, but until I actually get a bottle that it fits and try it out this is a rating for appearance.
My Klean Kanteen arrived and this cap fits perfectly. I bought the 18oz bottle so the straw will need to be cut down but overall I really do love this cap and am upgrading my original rating. I hope someday they will make other sizes. I would love to have one of these for my small Sigg bottle.
Review by on February 11, 2016