The Katadyn Hiker Pro Transparent Filter is super small and lightweight. Ideal for hikers, campers and emergency situations. Great for saving space and weight in bug-out bags. The benefit of a filter like this is that you can fill larger containers with clean water for cooking & making a cup of tea etc.The Katadyn Hiker Pro is the most widely sold microfilter in the U.S. outdoor market. The Hiker Pro is small, weighs a mere 233 grams, and thanks to its large filter area delivers an outstanding pumping performance. It reliably eliminates bacteria, cysts, and sediments from water. The filter is very easy to clean on trips thanks to its cleanable filter protector. The filter protector also appreciably extends the life of the 0.2 micron glassfiber filter cartridge. Its active carbon filling improves the taste of water and eliminates odors and it's transparent design allows you to view it's internal performance. Installation and removal of the input and output hoses is child’s play, thanks to convenient Quick Connect fittings and it now includes Hydration Pack adaptor quick connects to connect it directly to your backpack's water reservoir / bladder. Includes: Includes Hydration Pack Adaptor Quick Connects Prefilter Removable filter protector Easy Fill bottle adaptor Carry bag Details: Filters up to 1150 litres of water per filter cartridge Removes bacteria, protozoa, cysts, algae, spores, sediments. Reduces bad tastes and odors Output: up to 1 litre per minute Transparent design allows you to view the internal workings of the filter to assess it's performance Filtration Technology: Pump filter, AntiClogTM pleated cartridge made with 0.3 micron glassfiber. Includes activated carbon granules Dimensions: 7.6 x 16.5 x 6.1 cm Weight: 233 grams