Do you ever wish that you could drink from crystal clear creeks, alpine lakes, or mountain streams? Well, you can when you bring the Katadyn BeFree Water Filtration System on your next adventure. This compact water bottle with integrated filter makes a great choice for outdoor pursuits and travels to faraway places where tap water is suspect. Instead of lugging around a bulky pack loaded with a full day's worth of water, just bring this lightweight and compact bottle along with you. Simply fill up the flask and let the EZ-Clean Membrane do all the work. It's effective against microorganisms and even suitable for cloudy water. And when it's not filled, the collapsible bottle packs up small so you can stash it in tight spaces.