Reduce bad tastes, chlorine and organic chemical matter in your LifeStraw Steel water filter and LifeStraw Go filter bottle (both sold separately) with the LifeStraw Go replacement charcoal capsule.

Water TreatmentWater Treatment Replacement Filters

Enjoy clean water everywhere you go when you keep your LifeStraw water bottle (not included) in tip-top shape with this Go Series 2-stage replacement membrane microfilter and activated carbon filter.

Water TreatmentWater Treatment Replacement Filters

Let gravity do the work when you need clean drinking water. With the Katadyn Gravity BeFree 3.0L microfilter, you can drink directly from the reservoir or easily fill a bottle or another reservoir.

Water Filters and PurifiersWater Filters

Platypus took the already fast and easy-to-use GravityWorks™ filter system and came up with this smaller and lighter 2-liter complete kit that adapts to your backcountry travels.

Water Filters and PurifiersWater Filters

Keep a supply of drinking water right in your campsite. The Platypus GravityWorks™ water filter delivers 4 liters of potable water in just 2.5 minutes without requiring a single pump stroke.

Water Filters and PurifiersWater Filters

This replacement filter cartridge keeps your Platypus GravityWorks™ or CleanStream™ water filter system (sold separately) operating in tip-top shape.

Water TreatmentWater Treatment Replacement Filters

Drink water anywhere in the world—from local backcountry to remote locales—with the MSR Guardian Gravity purifier. Hang it while you go about your tasks at the hostel, basecamp or campsite.

Water Filters and PurifiersWater Purifiers

Restore your MSR Guardian Gravity purifier (not included) with this replacement cartridge to ensure high-flow delivery of purified, virus-free water on demand, virtually anywhere on Earth.

Water TreatmentWater Treatment Replacement Filters

A Backpacker Magazine 2016 Editors' Choice winner, the MSR Guardian Purifier physically removes viruses, bacteria, protozoa and dirt quickly and easily on backpacking trips and international travel.

Water Filters and PurifiersWater Purifiers

The lightweight, reliable and easy-to-use design makes the Katadyn Hiker microfilter a great choice for backpacking and trekking.

Water Filters and PurifiersWater Filters

This REI exclusive Katadyn Hiker Pro Clear Microfilter offers the same field-maintainable convenience and quick-connect fittings as the standard Hiker Pro, only with a unique transparent housing.

Water Filters and PurifiersWater Filters

Replacement element for Katadyn® Hiker, Hiker Pro and Base Camp water filters.

Water TreatmentWater Treatment Replacement Filters

The MSR Home Emergency Water Filter microfiltration system is perfect for anyone building emergency kits in preparation for compromised municipal water systems, disasters and boil orders.

Water Filters and PurifiersWater Filters

Potable Aqua iodine tablets are a lightweight and economical way to make water suitable for drinking.

Water Treatment ChemicalsWater Treatment Tablets