The Katadyn BeFree 0.6L is the go-to filtered water bottle for trail runners, endurance athletes, and ultralight backpackers who need clean water fast and do not want to carry extra weight. Weighing just 59 grams, less than most energy gel flasks, and collapsing completely flat when empty, it disappears into a running shorts pocket, cycling jersey, or vest pouch without adding perceptible bulk. The 0.1 micron EZ-Clean hollow fiber membrane filters out sediment and fine particles from your water sources at a fast 2 L/min flow rate with up to 1,000L total capacity. To use, fill from any stream, lake, spring, or fountain and squeeze directly to drink. No pumping, no waiting, no chemical tablets. Cleaning takes seconds: shake or swish in water to restore full flow. No backflushing tools, no disassembly required. BPA-free throughout, the 0.6L is compatible with hydration packs and folds down to almost nothing for storage. Whether you are mid-race on a mountain trail, commuting by bike, or moving fast through the backcountry, the BeFree 0.6L delivers clean water on demand with zero compromise on speed or weight. Trusted by Katadyn since 1928.