This is the cap we have all been waiting for! The new version Sport Cap has no leakage problem, and less noise while in use.
It makes it possible to quench your thirst on the go. Klean Kanteen spent a year developing the technology including the valve that allows air in at a rate fast enough to allow your drink out. It works, and is designed to last. Made with BPA-free polypropylene (pp#5), it was designed with one, simple moving part so it won't break or get clogged. It can be easily washed by hand or in the dishwasher. The Sport Cap 3.0 will fit on any Classic bottle as well as the 355ml Kids Sippy bottle (and is a great cap for kids who have outgrown the Sippy Spout).