The Platypus DayCap In-Bottle Filter transforms your favorite wide-mouth water bottle into a powerful, fast-flowing water filter. Designed to fit Nalgene®, HydroFlask®, and Yeti® Yonder™ bottles, this lightweight cap uses hollow fiber filtration to deliver safe, great-tasting water at up to 1 liter per minute. Easy to use and built to last, simply tip your bottle and drink—no extra setup required. Individually tested to meet EPA and NSF guidelines, the DayCap removes 99.9999% of bacteria and 99.9% of protozoa for reliable hydration wherever your adventures take you. Whether hiking, backpacking, or traveling, it’s the easiest way to filter water on the go.
Key Features
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Converts popular wide-mouth bottles into fast, safe water filters
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Compatible with Nalgene®, HydroFlask®, and Yeti® Yonder™ bottles
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Hollow fiber filtration delivers up to 1 liter per minute
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Removes 99.9999% of bacteria and 99.9% of protozoa*
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Easy-to-use spout for natural drinking flow
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Durable TPE molded construction built for outdoor use
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Simple cleaning by shaking to restore flow rates
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Filter detaches easily for cap-only mode
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Semi-flexible carry loop for quick attachment
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