Check the listing for details. Gravity Water Filter Straw, Camping Water Filtration System|Water Purifier Straw. Color: Blue, Condition: New. Listed at 7.49 USD. Membrane Solutions Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 3L Bag, 0.1 Micron, 4-Stage Filtration, Blue About the item: ✅Portable & Long Life-Span - This straw filtration at only 7.1'' long and 1" in diameter fits any bottle, cup, or glass. It weighs just 2 ounces and fits in the palm of your hand, pocket, gym bag, backpacks, survival packs and purses. Both ends of Upgrade straw filter are removable for cleaning to extend Longer Lifespan ensures it provides up to 5,000 liters (1,320 gallons) of drinking water. You can take it anywhere you want conveniently; ✅4-Stage Filtration - Our upgrade 4-Stage Filtration system including coarse filter screen, double layer pp cotton fiber, coconut shell activated carbon and hollow fiber ultrafiltration membranes. ✅Smaller Pore Size - We all know that the smaller pore size, the higher the filtering accuracy. Compared to the 0.2-micron filter straw on the market, Membrane Solutions 0.1 microns pore size filter straw maintains the optimum flow rate (500ml/min) while maintaining the filtration accuracy. WAKIWAKI 4-Stage Outdoor Water Filter Personal Water Filtration Straw Emergency Survival Purifier 0.1Micron Specifications Product Name Personal Water Filter Straw Brand WAKIWAKI Purification Capacity 5000L Filter Stage 4-Stage Stage 1&2 coarse filter screen, double layer pp cotton fiber Stage 3 coconut shell activated carbon Stage 4 hollow fiber ultrafiltration membranes Filtration Accuracy 0.1 Micron Flow rate 500 ml/min Leak-Proof YES Portable YES Length 7.1 inches Main Function Reduces minimum 99.99999% of escherichia coli, test by SGSCSTC Standards Technical Services Co., Ltd.Ningbo Branch Fit for river water, rain water, stream water, lake water, mountain spring water and cellar water. Be used for outdoor backpacking, hiking, camping, travel, hunting, fishing, scouting, emergency preparedness, etc Package list: 1. 1x Personal Filter Straw2. 4x Personal Filter Straw3. 1x 3L Gravity-fed Filter Kit4. 4x 3L Gravity-fed Filter Kits5. 1x 3L Gravity-fed Filter Kit,4x Personal Filter Straws