Katadyn Pocket Microfilter Portable Water FilterThank you for your support of small businesses like Highwater Filters. When your adventure could be extreme, you need efficient, long lasting, durable filtration. The rugged workhorse of our filters, the classic Katadyn Pocket is a small but reliable friend you want along to keep you healthy and hydrated. Decades of military and emergency professionals around the world have put their trust in the Pockets ability to deliver water free of bacteria and