Filter Cap

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The Filter Cap lets you enjoy fresh-tasting tap water, wherever you bring your S’well! Simply fill from the tap, secure the cap, and sip for instant filtration. This leak-free cap features a protective cover and an ergonomic drink-through spout. Our premium carbon filter meets NSF standards to reduce chlorine and particulates, while improving taste and odor. The S’well Filter Cap fits our 9oz and 17oz Original bottles and comes with one filter.

  • Filters chlorine and particulates.

  • Improves taste and odor of tap water.

  • Independently tested to meet NSF-42 standards.

  • Leak-free, protective hygienic cap.

  • BPA/BPS-free.

  • One filter spans 3 months or 40 gallons of water, which is equivalent to 300 single-use plastic water bottles!

  • Also available: the Filter Replacement 2-Pack.
Fits 9oz and 17oz S’well Bottles. Approx. 1.73″D x 1.85″W x 5.98″H, 0.15lbs
Consult your local water provider for water quality details or if you have a well, have your water tested by a qualified water testing lab. Filter is intended to be used with potable (municipal tap) water only. Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after filtration. Do not use with hot or carbonated water. Do not place in dishwasher, microwave or freezer.
Instructions for First Use:

  1. Remove from outer packaging

  2. Rinse the filter under cold running water for one minute

  3. Press the opening of the filter into the cap base until it clicks into place

  4. Fill bottle* with cold or room temperature water

  5. Screw on cap securely

  6. Flip oven cover, tilt, and drink in water through spout (feels similar to sipping a smoothie)

* Bottle not included

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Frequently Asked Questions
How does my S’well work?
S'well bottles, Travelers, and Roamers will keep your beverage cold for up to 24 hours or hot for up to 12. Thanks to our triple-walled ThermaS'well™ insulation technology, which includes a copper layer, S'well products are able to keep any liquid hot or cold for long stretches of time. See more.
Will my S’well product sweat?
No way! Thanks to S’well’s triple-walled insulation, which includes a copper layer, the outside of your S’well will stay completely condensation-free. See more.
Can I fly with my S'well?
Prepare for take off! Your S’well is airport security friendly, as long as you remember to empty out what’s inside first. See more.
Does S'well sell different caps & lids?
Designed to accommodate your active and on-the-go lifestyle, S’well has released a variety of accessories sold separately. See more.
What is the warranty on S’well products?
S’well offers a one-year limited warranty on all bottles purchased from and authorized retailers with proof of purchase. This warranty covers any manufacturer defects, such as thermal performance issues, base becoming detached from the bottle and non-polished surfaces. See more.
Still have questions? Go here.