Includes prefilter, bottle adapter and carry bag. Lightweight and easy to use. Unique, pleated cartridge design provides fast and easy pumping. Convenient and handy for 1-2 people e.g. while hiking or trekking. Compatible with hydration bladders. AntiClog technology with 0.3 micron glass fiber. Carbon granulate activated. Capacity: 200 gallon. Output: 1 quart per minute. 3.5 in. L x 8.5 in. W x 9 in. H (1 lbs.). The Katadyn Hiker is the best selling micro filter in the US Outdoor Market. The best choice for all around use. No cleaning needed.