The drinking system consists of a hollow fiber filter and a water container. The filter is simply screwed onto the DuoLock squeeze bottle and can filter the water directly while drinking. This makes the Quickdraw Microfilter & Reservoir System the perfect companion for your trekking or mountain tours. The hollow fiber filter purifies up to 2.5 liters of water per minute or one liter in less than 30 seconds (by squeezing). It has one side with a drinking opening and one with a filter that screws directly onto your water bottle. You can also use it to conveniently transfer the filtered water into a clean bottle. Filling the water container included in the set is also uncomplicated thanks to the large opening and possible at any stream, lake or other body of water. By simply shaking the filter-bottle system can also be conveniently cleaned on the go. The new drinking system from Platypus is conceivably simple and perfect for on the road!