Sawyer Select S3 Water Purifier Bottle - 20 fl. oz.

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Enjoy clean water with the 20 fl. oz. Sawyer Select S3 water purifier bottle. It removes heavy metals, viruses, bacteria, protozoa, chemicals and pesticides found in fresh water sources.


  • Proprietary foam membrane, durable silicone bottle and 0.1 micron hollow-fiber filter ensure clean water in the backcountry, when traveling and during emergencies
  • Together, purifier bottle and included filter remove heavy metals, 99.99% of viruses, 99.99999% of bacteria, 99.9999% of protozoa and cysts, chemicals and pesticides
  • Foam membrane in the purifier bottle lasts 400 uses; hollow-fiber micro-squeeze filter is rated up to 100,000 gallons
  • After 400 uses, purchase a replacement purifier bottle (sold separately) to continue using with the included filter
  • Purifier reduces heavy metals to 0.5 parts per billion, up to 260 times lower than the EPA's maximum recommended level
  • Reduces chemicals to 0.5 parts per billion, up to 40 times lower than the EPA's maximum recommended level
  • Reduces pesticides to 0.01 parts per billion, up to 400 times lower than the EPA's maximum recommended level
  • Light, fast filter weighs only 10 oz. and treats water in 10 seconds
  • Easy to use—simply fill to the max fill line, squeeze the bottle in an alternating motion for 10 seconds, then drink or dispense water into another container

Made in USA.

View all Sawyer Straw Water Filters

Technical Specs

Best Use



Emergency Preparedness

Filter Type


Filter Medium

Foam absorption and hollow-fiber membrane


Protozoa, Bacteria And Viruses


20 fluid ounces

Housing Material


BPA Free


Field Cleanable



2.5 x 2.5 x 14.5 inches


10 ounces

2 reviews with an average rating of 2.5 out of 5 stars

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