Osprey Hydraulics LT 1. 5L Lumbar Reservoir The hydration reservoir, upgraded With the Osprey Hydraulics(TM) LT Lumbar Reservoir, Osprey has resigned and improved an essential part of hydration packs that often gets overlooked. This Hydration Reservoir is optimized for waist packs, and has been completely redesigned for easier use, with improved ergonomics and a new dual-baffle system that adds structure to the bladder without adding excess weight. The Hydraulics(TM) LT is now easier than ever to carry, fill, and load into a pack, with a compact Slide-Seal(TM) opening that can be used one-handed for a quick, easy seal. This reservoir is also compatible with the Osprey Hydra Clip hanger, and boasts a secure hose magnet system, with a thumb-operated on/off lever for effortless hydration. Features Dual internal baffle system adds structure to the reservoir without adding excess weight Compact Slide-Seal(TM) closure can be easily operated with one hand, making it easier than ever to fill Compatible with Osprey Hydra Clip reservoir hanger for secure carrying Thumb-operated on/off lever for one-handed operation that's easier than ever Specifications Weight0. 34 lbs Hydration Reservoir Volume1. 5 liter Dimensions (inches)0. 39H X 15. 75W X 9. 06D | Osprey | Hydraulicst 1. 5Lumbar Reservoir 1. 5L Lumbar Res Hydration Pack