The classic. This robust water filter made of heavy duty materials is ideal for long lasting continuous use even under extreme circumstances. The silver impregnated ceramic element is effective against bacteria and protozoa. The Katadyn Pocket has a lifetime warranty. Includes: Prefilter, bottle clip and carry bag.

Filters 13,000 gallons and includes a cleanable ceramic filter. Weighs only 20 oz.

Filters down to .2 microns.

I also carry the essential spare parts kits. You never know when you might loose a seal or O ring. This has all the common components you may need.