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Our Technology For Your Favorite Bottle

Our Technology For Your Favorite Bottle

WAATR UV purification and self-cleaning bottle caps for your favorite bottle.

We are great advocates for reducing industrial waste, minimalism, and recyclability. If you already have an insulated bottle, there is a high chance we already have a cap that fits your bottle. Our Cap-only systems fits major brands like Hydro Flask, Iron Flask, Simple Modern, Takeya, MIRA, Klean Kanteen, FIFTY/FIFTY, Hydro Cell, Thermoflask, Gold Armour, S'well, Mira, Chilly's, and many others.

Use the drop-down menu below and select the Brand, Style, and Size of your bottle to see which of our cap-only systems is compatible with your bottle.

If you need any help selecting the right cap for you, please feel free to contact our customer service at