What Our Gearhead(R) Experts Are Saying:"This 1. 0L BeFree filter bottle is my go-to for backpacking and long hikes. It's super easy to use and fills quickly from streams or lakes. The larger capacity is perfect for when I need more water between refills, and the collapsible design keeps it packable and light."When our adventures take us deeper into the wild, the Katadyn BeFree 1. 0L Water Filter Bottle ensures we stay hydrated with ease. Its hollow fiber filter provides reliable protection, removing bacteria and protozoa so we can confidently sip from lakes, rivers, and streams. Designed for efficiency, the wide-mouth opening makes filling fast and simple, while the larger 1. 0L capacity lets us carry more water for longer treks. What sets the BeFree apart is its ultra-lightweight, collapsible design. When empty, it packs down small, taking up minimal space in our pack. The filter's fast flow rate-up to 2 liters per minute-means we spend less time filtering and more time on the trail. With the ability to filter up to 1,000 liters before needing replacement, the BeFree 1. 0L is the ideal companion for multi-day trips, thru-hikes, and long-distance adventures.