WAATR HydroCap UV Water Treatment System & Self-Cleaning Replacement Cap for wide-mouth bottles. in Black

GOOD DESIGN AWARD WINNER 2021 Fits Iron Flask, Hydro Flask, ThermoFlask, Simple Modern Takeya and other brands DESIGNED FOR WIDE-MOUTH BOTTLES | Cap designed to fit Hydro Flask, Iron Flask, Simple Modern Summit, MIRA, Takeya, Klean-Kanteen, FIFTY/FIFTY, H