Staying hydrated and easily fueled is key for outdoor enthusiasts and athletes who enjoy covering long distances quickly. The new Rev Series perfectly suits the highly technical needs of trail running and endurance racing while also serving as a perfect companion to anyone who appreciates smaller volume, streamlined hydration packs. These packs carry just the essentials for the efficient traveler who prefers not to stop. Combined with our new Hydraulics™ LT Reservoir with built in baffles to significantly reduce barreling and sloshing, these packs keep the load balanced without bouncing, rubbing or chaffing.