Adding minimal gear to your pack, the MSR Thru-Link Inline Water Filter is a simple solution to clean water on the go. Just click it into your hydration reservoir and you're ready to filter as you drink and hike. Engineered for high-flow drinking, it makes it easy to stay hydrated on long day hikes and fast-paced missions. The filter is compatible with any reservoir system, and uses both hollow fiber technology and activated carbon to provide reliable, safe and taste-free water. At camp, the Thru-Link lets you use your reservoir as a gravity system for the luxury of pump-free filtration.