Rapid Pure Replacement Cartridge Size:2.5" A pesky stick or rock

A pesky stick or rock in your shoe can interrupt an awesome run

Dry waterproof

It's packable and quick to set up so you can relax in comfort on every adventure

Hydroseal® Floor

and more versatile waterproof protection with famous TorsoFlo™ venting

Rapid Pure Replacement Cartridge Size:2.5" A pesky stick or rockThis water filter replacement element is easy to install and reduces your environmental impact by letting you reuse the same water purification system again and again. Unlike microfilters that rely on pore size to simply filter out bacteria and sediment, RapidPure water treatment actually purifies water using electroadsorption, removing bacteria, parasites, viruses, parasites, chemicals, heavy metals, pesticides, and microplastics, as well as