Jack Wolfskin Trooper Rucksack style:shell: 100% polyester; lining: 100% polyester Imported day pack for travel and everyday use, main compartment, 7 additional pockets and compartments back system with wide straps, a laptop compartment quick-release side compression straps, SNUGGLE UP PLUS: comfortable, thickly padded back system with wide straps and balanced load distribution detachable waist belt / modular loop Measurements: 20,9*12,6*12,2 in / Capacity: 32 Lit.