The LF 5L, a tool engineered for seeking the uncomfortable. Our first running vest features a tension system that eliminates bounce, an integrated pole quiver and ice tool carry, and capacity for up to 3L of hydration. This vest was created so runners can go further. A 100% DyneemaⓇ mesh base adds breathability while significantly reducing weight and maintaining tension under load. This is the first vest we want to run in. The LF 5L comes with two 600mL Hydrapak flasks.