1、Portable Water Filtration System: This outdoor survival water filter set contains mini water filter straw, water bag, water tube, dust cover and water bottole. 2、Specification: The bottom adapter can be equipped with 8mm water pipe, which is suitable for cola (cola cannot be filtered), carbonated drinks and other 28mm water bottles. 3、Effective Filtration: Ultrafiltration (UF) is a separation process using membranes with pore diameters in the range of 0.1‑0.01 microns. It is a low pressure membrane process for water treatment, aiming to remove the turbidity caused by particles composed of suspended colloidal substances and proteins. Generally, ultrafiltration membrane can remove high components, colloidal substances, organic and inorganic polymer molecules. 4、Long Service Life: Compact and portable, with multiple uses and multi layer filtering. The service life of ultrafiltration membrane can be up more than 3‑5 years, which is comparable to reverse osmosis membrane. 5、Applicable Scenes: This portable water filter system kit is prefect for outdoor adventures, backpacking, camping, hiking, travelling. 1 x Water Filter1 x Water Pipe1 x Dust Cover1 x Manual Item Type: Emergency Water Filtration SystemMaterial: Plastic; Ultrafiltration, carbon fiberGross Weight: 200g / 7.1ozSize: Water Filter Straw: 12x3cm / 4.7x 1.2inWater Pipe: 4mmx6mmx60cm / 0.16x 0.24x 23.6in