16.9oz UltraPress® Purifier - Covert Edition - Covert BlackCompact, discrete, and ridiculously easy to use the UltraPress Covert Edition fits into any pack pocket (or cup holder), requires zero setup, and makes 16. 9 ounces of clean purifier water in a blazing fast 10 seconds (3L min). Stealth on the go filtration and purification for the hiker, backpacker, hunter, or global adventurer seeking discretion and fast flow purified water for drinking, filling hydration reservoirs, or cooking.

GeoPress cartridges were redesigned in April 2023 with a new "core" and "flow channels" to accommodate a One-Way Valve for use with electrolytes

backpacker

and ridiculously easy to use — the 16

Also improves taste

and makes 16

drink mixes and or other flavored liquids

Note: the GeoPress(R) One-Way Valve ships pre-installed in every GeoPress Bottle

That's Grayl Ti

even as press time increases

Lifespan will decline when purifying water with high levels of silt

our One-Way Valve for the UltraPress® allows electrolytes and sport drink mixes to be added to clean purified water without compromising the integrity of the filter

Only compatible with 2nd Generation cartridges first sold in April 2023 that include a new "core" and "flow channel" design (horizontal vents)