【Lightest filter on the market】1.83 oz mini filter for kids and families. Includes mini water filter, reusable squeeze bag, 8 inch extension tube, 3 pp cotton pads and syringe. 【Advanced filtration technology】Micro-filtration straw eliminates the passage of 99.9999% of particles, pollutants, chlorine and disease contaminants, and disperses flavors. 【Top filtration】Excellent 0.01 micron 2-stage fiber membrane and medical grade pp cotton inline filter. Perfect for outdoor adventures, backpacking, camping, hiking, travel. 【Long service life】Provides up to 100,000 gallons of safe drinking water with a flow rate of 0.2 gpm. A must-have for emergency kits and crisis preparation. 【Wide application】Connect the water filter directly to a drinking bag, threaded water bottle, water bladder or beverage without the use of any chemicals.