Jack Wolfskin Ham Rock Rucksack, Classic Blue, 12 L style:1.shell: 100% polyamide; 2.shell: 100% polyamide; 3.shell: 100% polyamide; lining: 100% polyester Imported Small, lightweight bike and running pack Very lightweight, flexible full-contact suspension system Main compartment, 4 pockets Attachment for LED light, reflectors, rain cover Equipped for a hydration system