This water filter system helps remove particles and impurities, reduce turbidity and provide clean safe drinking water. It is a perfect choice for outdoor adventure, emergency preparedness, camping, hiking, backpacking, etc. Features: Hollow-fiber UF membrane filter removes 99.9999% of smallest particles and impurities. BPA-free and chemical free, filter accuracy to 0.01 micron, reduce turbidity and improve the taste. Long life span, purify up to 4,000 liters of water. Soft cap protects the straw free from dust and stains. Includes a water purifier straw, squeeze water pouch, silicone hose, hanging strap. Comes with a drawstring sack for easy storage and carrying. Perfect for outdoor adventure, emergency preparedness, camping, hiking, backpacking, etc. Specifications: Material: Carbon fiber + Hollow fiber UF membrane + Silicone Color: Blue / Army Green (optional) Filter Capacity: 4,000L Filter Accuracy: 0.01 micron Water Flow: 200ml/min Dimension: Approx. 32 * 175mm / 1.2 * 6.9in Item Weight: 47g / 1.6oz Water Bag: 26.5 * 12cm / 10.4 * 4.7in Package Size: 20 * 14 * 3.8cm / 7.9 * 5.5 * 1.5in Package Weight: 155g / 5.5oz Package List: 1 * Water Filter Straw 1 * Silicone Hose 1 * Hanging Strap 1 * Squeeze Water Bag 1 * Storage Sack 1 * User Manual