Felix T.wrote a review of Purist by Specialized Purist Backcountry Water Bottle on March 25, 2019
Familiarity: I've used it several times
This new design on the cap leaks. If the bottle tips over on its side it will spill out its contents. For example, if I flip the bike upside down to fix a flat, the liquid inside the bottles will leak out. I have to remember to remove the bottles from the cages before I flip the bike over or I will have to refill the bottles. The last design did not leak. For some reason the hole in the center of the cap is open and does not close completely like the last design. Either I received two bad caps or it is an issue with the quality control. At first I thought that I just had to break them in and use them a few times but after being used for over a month, they continue to leak.