Osprey Hydraulics LS 1.5L Reservoir

Trail runners and fastpackers who need hydration without the bounce will appreciate the Osprey Hydraulics LS 1.5L Reservoir. Designed for lumbar-specific packs, it sits low and stable, keeping your center of gravity balanced on technical terrain. The magnetic bite valve clips securely to the sternum strap, so you can grab a drink without breaking stride.

Key specifications

• Capacity: 1.5 L
• Material: BPA-free TPU film
• Closure: Slide-Seal top opening
• Hose: QuickConnect system, approx. 90 cm length
• Bite valve: High-flow Blaster with magnetic clip
• Backerplate: HydroStatic
• Antimicrobial treatment: Yes
• Welded seams for durability
• Wide mouth opening for easy cleaning

Why choose it

The lumbar-specific shape reduces sloshing and improves pack stability compared to traditional reservoirs. The QuickConnect hose lets you remove the reservoir without re-threading the hose, and the magnetic bite valve keeps the hose out of the way when not in use. The wide opening and welded seams make cleaning and drying straightforward.

Ideal use cases

• Trail running with a lumbar hydration pack
• Fastpacking and ultralight backpacking
• Day hikes where low-profile hydration is preferred

Good to know

The reservoir is compatible with Osprey hydration-ready packs and universal systems. It is suitable for cold to warm liquids, but not boiling. The TPU film is BPA-free, phthalate-free, and lead-free.