Provides 5 Advanced Layers of Filtration: Your questionable stream or lake water passes through 5 filters, each with a specific job to do; This water purification system will turn even the most suspicious-looking wilderness water into clean and clear drinking waterSmall Enough to Slide into Your Pocket: Our most portable water filtration system, weighing 9.5 oz and smaller than an mobile phone; The Mini puts an end to the classic outdoorsman's dilemma: carry less water (and risk thirst) or carry more (and suffer the weight)You Won't Have to Wait for Clean H2O: Water filtration shouldn't feel like a workout, and with this camping water filter, it won't; The portable water purifier has a 1.2 liter per minute flow rate, allowing you to fill up your standard water bottle in about 25 secondsUp for Any Adventure & We Mean Any: This personal water filter is an all-metal design, so you'll be able to avoid the all-too-common trail disaster of a broken filter miles from civilization; And the smoothing-operating stainless steel piston won't degrade over timeFocused On Outdoor Filtration Solutions: Let us handle your hydration needs, you focus on spending more time enjoying the fun stuff; With our dependable, innovative filtration systems, your only concern should be which path to head down and explore nextMaintenance: 1. Remove the two (2) Philips head screws first before unscrewing the water cap outlet. 2. Unscrew the water cap outlet and pull out the filter. 3. The inside filter will come out together with the cap. 4. Flush the UF membrane with clean water.