Portable and ultra-light: the size is 33 x 175 mm and the weight is approx. 50g The water filter can be put in a backpack or bag at any time. A lightweight, comfortable and hygienic way to stay hydrated while camping, hiking, trekking, backpacking, sports and fitness. High filtration capacity: Based on the technology of medical dialysis process, the built-in UF ultra-filtration filter element 0.01 micron ultra-filtration membrane, the water purification capacity can reach 4000 litres (used after rinsing), and the water tastes very clean. Remove 99.99% BacteriaThe portable water filter is an environmentally friendly personal water filter for outdoor use. Shell ABS contains PS filter wire + activated carbon fibre cotton ball, food grade silicone adapter. Filters 99.99% of bacteria and micro-organisms. Easy to useThe portable mini water filter can be connected to a water bag, normal water bottle or hydration system; you can also drink directly from the water source with the included extension straw. 1 minute water capacity: 250 ~ 300 ml. Applicable to different scenariosThe emergency water filter system is lightweight and compact and comes with a bag for easy storage and transport. Perfect for outdoor adventures, emergency preparedness, camping, hiking, backpacking and more. NOTE 1. The size of the product is measured manually, and there will be an error of 2-3mm due to factors such as different measurement tools and measurement methods. 2. This product is all taken in kind, but due to differences in photography, lighting, color deviation, and personal understanding of color. As a result, there may be some color difference between the actual product and the photo, and the color is subject to the actual product. 3. Please take good care of our products