Product Description Advanced 3-level Filter : 0.01 Micron Ultrafiltration Membrane Camping Water Filter could help you effectively filter water (The diameter is one ten thousandth of the hair), anything larger than 0.01 microns in diameter cannot pass, Carbon filter helps remove the odor and improve the taste. Camping Water Purifier : Outdoor water filter for hiking camping backpacking suitable for most outdoor water sources, can effectively turn lakes, rivers, spring, streams into drinking water and is perfect for outdoor hiking, camping, hunting, fishing and emergency preparedness. Replaceable Water Filter : Medical Grade Hollow Fiber UF Membrane and High Quality Carbon filter are replaceable, emergency water filter pump can be used for up to 3,000 Liters (793 Gallons) before it needs to be replaced ( Available for sale separately). Personal Portable Filter Pump : Outdoor water purifier weighs 8.9oz.(254g) and its dimensions is 3.15 X 1.97 X 6.69 inch, which easily fits in your knapsack and allows you to take it anywhere with sustained water supply, hiking water filter pump provides a super fast flow rate of 1400 ml (49.4 Oz) per minute.