spleeftwrote a review of Hydro Flask 21oz Standard Water Bottle with Sport Cap on February 27, 2019
We've had these bottles for a few years and they are as good as most aluminum water bottles. The problem is the Sports cap. We purchased the sports caps ( 3 of them ) to replace the original Flex Caps and they work for a little while then develop a leak/ drip. Back country graciously replaced one of them. Ive reached out to Hydro Flask with no results. In fact if you look at the Hydro Flask web site , the Sports cap description has been updated to state it "is not leak proof"
It is great as a one handed open/close with your teeth cap, but if it falls over in your car/ bag. it will leak.