To move fast and light on the trail, keep your center of gravity tight. The REI Co-op Flash 15 hydration vest holds 1.75 L of water snug to your core while keeping you well supplied for your day hike.
Equipped with a 3-liter hydration reservoir, the ALPS Mountaineering Hydro Trail 15 pack makes it easy to quench your thirst on the go while you hike with a day's worth of essentials.