Jack Wolfskin Moab Jam Rucksack style:1.shell: 100% polyamide; 2.shell: 100% polyamide; lining: 100% polyester Imported Medium-sized sports pack with flexible, body-hugging suspension system Medium-sized, single-chamber pack for active outdoor trips Main compartment, 5 pockets Stowaway helmet attachment, attachment for LED light, reflectors, rain cover Equipped for a hydration system