Jack Wolfskin EDS Dynamic Pack Rucksack style:1.shell: 100% polyamide; 2.shell: 100% polyamide; lining: 100% polyester Imported Hiking pack with ergo-dynamic suspension system, designed for single-day trips Single chamber backpack for day hikes, detachable waist belt Universal fit, large main compartment, 4 pockets Trekking pole attachment Equipped for a hydration system