Features: 1. Removes Bacteria & Parasites: Our personal water filter can remove 99.999% of waterborne bacteria (E. coli), and 99.999% of waterborne parasites (cryptosporidium). 2. Double Filter Inner Core: It is composed of activated carbon + water purification filter element, can filter harmful substances, activated carbon helps clean out all kinds of dirt and enhance water taste. 3. Water Bag: When encountering a water source with more impurities, you can use a bag to settle the impurities first, and then use a filter and water to prevent too many impurities from causing the blockage. 4. Compact Size: You can take the water filter straw with you everywhere you go. The compact size fits easily in a backpack, briefcase, or overnight bag. 5. Wide Application: It is ideal for hiking, camping, and traveling, will help you reduce fear, anxiety, and losses during water shortages and other emergency circumstances. Specification: Material: ABS, PE Size: 21 x 2.5cm Color: Blue Weight: 90g Package Included: 1 x Outdoor Water Purifier Kit Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store