Osprey 1.5 Liter Hydraulics LT Reservoir Backpacks it has double layers of

it has double layers of fabric at the bottom for extra durability

including materials used

main case with zipper section

Adjustable and easy to use

Lightweight

Osprey 1.5 Liter Hydraulics LT Reservoir Backpacks it has double layers of[[Description]] Ospreys Hydraulics LT 1. 5L Reservoir by Hydrapak is made for light and fast activities where weight and balance are critical. Twin welded chevron baffles stabilize the water and maintain a flat profile. The streamlined design allows for easy loading into internal hydration sleeves. Thoughtful design makes filling, cleaning and most importantly staying hydrated on the trail easier than ever. All parts are BPA free, phthalate free, lead