Features of Mammut Lithium 15 Pack Integrated, detachable rain cover Trekking pole carrier Fold-out cell phone pocket on the hip belt Detachable, padded hip belt Zip pocket with key pocket Large front zipper pocket Hydration system-compatible 2 mesh side pockets Zipper pocket on hip belt Main zipper compartment Forward-pull hip belt adjustment Super-lightweight, Highly breathable EVA shoulder padding Good back ventilation thanks to 3D EVA foam with air channels Lateral compression straps Fabric Details Main fabric : 100D nylon Robic recycled Base fabric : 210D nylon Dragon recycled Main fabric: 100% polyamide Base material: 100% polyamide