Specification: Water Flow: 0.6L/min. Type: Outdoor Water Filter. Size: 40*136mm. Material: ABS, UF (medical grade), Silicone. Application: Running Fresh Water Source. This gravity water filter system is designed for group filtration needs. Set up the gravity-based water filtering system with a palm-sized water filter and a 3-liter reservoir. The system includes a tree strap for hanging. Suitable for hiking, camping, canoeing, fishing, hunting, climbing, travel, scouting, outdoor work, survival, and emergency scenarios. Features: Provides up to 2000 liters of drinkable water from natural renewable fresh water sources without chemicals. Lifespan can be extended by backwashing with clean water to rinse away impurities. A silicone gasket around the mouthpiece allows for backflushing with a standard bottle. Includes: Portable Water Filter. Dirty Water Reservoir (3000ml). Clean Water Collapsible Bottle (1000ml). Silicone Hose and Hose Clip. Tree Strap (1 meter). Condition: New.