Osprey Hydraulics Lumbar Reservoir - 2021 - 1.5L Lumbar algolia-ignore Dimensions and Weight: 92 x

Dimensions and Weight: 92 x 51 x 20mm (at its widest points)

Proper air pressure is 280-300psi at full extension

Mesh insert in the thigh enhances ventilation

which is a lot

Osprey Hydraulics Lumbar Reservoir - 2021 - 1.5L Lumbar algolia-ignore Dimensions and Weight: 92 xOspreys Hydraulics LT 1. 5L Lumbar Reservoir by Hydrapak is made for those who prefer an off the shoulder hydration solution. Designed to fit in most lumbar packs, but perfectly pairs as an extra or replacement reservoir for Osprey's Seral lumbar mountain biking pack. Twin welded chevron baffles stabilize the water and maintain a flat profile. Thoughtful design makes filling, cleaning, andmost importantlystaying hydrated on the trail easier than ever.