Weighing only 1.23oz, easy to use and light filter straw, take up very little space in your backpack Just sip on the straw and the water will be filtered out when it enters the mouth Fill your water bottle, insert the filter and start sipping The 0.01 micron (minimum) filter can physically remove 99.99% of bacteria, such as Salmonella, Cholera, and E. coli; remove 99.9% of protozoa, such as Giardia and Cryptosporidium Effective filtration up to 1200L (317 Gallons) Blowing off the water filter regularly after drinking helps to keep the water filter clean and prevent clogging Includes a durable carabiner Specifications: Filter material: ultrafiltration membrane Product material: ABS+PE Filter life: 1200L Flow rate: 550 ML/min Product size: 11.8*3*3cm Package included 1 x Outdoor Water Purifier(with Carabiner) 1 x English and Chinese User Manual Specifications Brand N/A Color Green Packaging Type Simple PP Bag Plug Type (For Supply) N/A User Manual (Language) English and Chinese Gross Weight 0.073kg Volume Weight 0.057kg Package Length 17.000cm Package Width 5.000cm Package Height 3.000cm