• Online:
  • URL for this product:
  • From the U.S. and CanadaCall 1-800-426-4840
  • Mon. through Sun., 4 a.m. through 11 p.m. PT.
  • InternationalCall 1-253-891-2500
  • Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.

Katadyn Exstream Purifier Water Bottle - 20 fl. oz.

This item is currently sold out or unavailable online.

Or, may we suggest shopping for similar items:

Shop more Water TreatmentShop more Katadyn

This page is provided for reference to historical product information.

Simply fill this Katadyn sport bottle from any fresh water source, squeeze and sip! Water is made safe to drink as it flows through three purifying stages.

  • First-stage Filter removes large sediment and disagreeable odors
  • Second-stage Cyst Filter traps protozoa in a web of glass-fiber
  • Third-stage EPA registered ViruStat Microbial Cartridge disinfects the water from bacteria and viruses with iodinated resin
  • Fits neatly in a bicycle's water bottle cage or the pocket of your pack; spout snaps shut for dripless transportation
  • The 26 oz. bottle holds 20 fl. oz. of water after the displacement of filter cartridge
  • Polyethylene is 100% BPA free

This personal hydration system provides complete anti-microbial protection against cysts, bacteria and viruses. It is recommended that the ViruStat Cartridge be changed after 200 refills (26 gallons, depending on water quality). Change the Cyst and Pre/Post Filters when water flow becomes constricted.

Made in USA.

Item 708981


This item's hot - and it's only available online.


This item's hot—and it's only available online.

REI Membership

Katadyn Exstream Purifier Water Bottle - 20 fl. oz. Specs
Best use
Squeeze bottle
Glass fiber/iodine/coconut carbon
Protozoa, bacteria and viruses
Not applicable
Not applicable
0.3 liters per minute
11 x 3 x 3 inches
7 ounces
Filter type
Filter medium
Pump force
Pump strokes per liter
Housing material
Field cleanable

Katadyn Exstream Purifier Water Bottle - 20 fl. oz.

Loading Ratings & Reviews...

Ask a question and have it answered by REI product experts and fellow outdoor enthusiasts. Need immediate assistance? Use Live Help.

Loading Questions & Answers...

How are we doing? Give us feedback on this page.

FREE SHIPPING With $50 minimum purchase

MEMBERS, EARN A $20 BONUS CARD! When you spend $100 April 14-29. Single-use bonus card redeemable May 2-12. Details
  • Join REI today!
  • REI Membership
  • REI member benefits include an annual refund (typically 10% on eligible purchases).
  • Join REI today!
  • Sign up for REI Gearmail®
  • and get 15% off selected items!
  • Store Locator
  • Locate an REI store near you.
  • Find a Store
© 2014 Recreational Equipment, Inc. All rights reserved. REI, the REI Tree and Mountain design, Novara, and
REI Adventures are trademarks of Recreational Equipment, Inc.

Find REI on: FacebookTwitterYouTubeFlickrMobile site