Feature: 1. Lightweight and compact emergency water filter system. 2. Removes 99.9999% of smallest particles and impurities to improve the taste. 3. High precision hollow fiber membrane removes 0.01 micron of particles and reduces turbidity. Specification: This water filter straw can effectively remove the particles and impurities in the water to provide clean, safe water. It is perfect for outdoor emergency, camping, hiking, backpacking, etc. Features: Lightweight and compact emergency water filter system. Removes 99.9999% of smallest particles and impurities to improve the taste. High precision hollow fiber membrane removes 0.01 micron of particles and reduces turbidity. Long life span, purify at least 4,000 liters of water from creeks, lakes, streams and other water sources. BPA-free and chemical free, conveniently provide safe, clean drinking water. Perfect for outdoor adventure, emergency preparedness, camping, hiking, backpacking, etc. Specifications: Material: Carbon fiber + Hollow-fiber UF membrane Filter Accuracy: 0.01 micron Filter Capacity: 4,000 liters Flow Rate: 300ml/min Dimension: 3 * 12cm / 1.2 * 4.7in Weight: 34g / 1.2oz Package Size: 19.2 * 7.7 * 3.7cm / 7.5 * 3.0 * 1.4in Package Weight: 125g / 4.4oz Package List: 1 * Water Filter Straw 1 * Silicone Hose 1 * Storage Box Package List: 1 * Water Filter Straw 1 * Silicone Hose 1 * Storage Box