The GeoPress® Purifier - Covert Edition by grayl.com is the perfect solution for travelers and adventurers who want to stay safe and hydrated on the go. This 24oz purifier bottle utilizes a simple three-step process to quickly filter out 99.99% of viruses, bacteria, and protozoan cysts, as well as reduce heavy metals and chemicals, to ensure you are drinking clean, safe water no matter where you are. With its sleek and discreet design