An Must have camping gear item, the Katadyn Hiker PRO Microfilter efficiently removes bacteria and protozoan parasites including giardia and cryptosporidia from backcountry drinking H2O sources. A step up from the Trendy Hiker model, the Katadyn Hiker PRO H2O Filter includes a removable filter Safe guardor that extends cartridge life in demanding conditions, a field maintenance kit, and Quick Connect Fittings for easy installation and removal of output hoses, including direct attachment to hydration bladder drink tubes (1/4 inch inside diameter). Additionally, a universal bottle adaptor allows fuss-free filling of bike bottles, wide mouth Nalgene bottles, etc. Backpackers and climbers alike appreciate the small, lightweight design, and low maintenance AntiClog technology. The fast, great tasting output of the Katadyn Hiker PRO H2O Filter also makes it an attractive option, even enough for those treatment tablet die-hards to finally jump on the microfilter wagon. If traveling to a developing country, be sure to consider a system that eliminates viruses too.