Klean Kanteen Sport Cap 2.0 Replacement Cap - 3 Pack
This new and improved sport cap offers 3x the flow of the first sport cap, a quieter valve, and a new and improved spout that's six times stronger than the earlier version of the Sport 2.0., this cap is guaranteed to quench your thirst. Made with BPA-free polypropylene (pp#5), the cap is designed with one, simple moving part so it won't break or get crud in the works.