What Our Gearhead(R) Experts Are Saying:"I use the LS Lumbar Reservoir in my hip belt pack for longer hikes when I want to keep weight off my shoulders. It sits low, rides balanced, and the shorter hose and bite valve make mid-stride hydration easy. It's a game-changer for comfort on the move."When we want to keep our upper body light and our stride steady, we turn to the Hydraulics LS Lumbar Reservoir. Designed to sit low and stable in lumbar-style packs, this 1. 5L reservoir helps distribute weight closer to our center of gravity for better balance and all-day comfort. Its compact shape and shortened hose keep hydration accessible without swinging or sloshing, while the thumb-operated bite valve makes it easy to sip and go. Whether we're hiking, fastpacking, or cruising mellow miles, this low-profile design keeps hydration dialed without loading down our shoulders.