Chinook Journey Internal Frame Travel Pack 600D HDTEX rip stop polyester, 600 HDTEX Polyester and internal frame with anodized aluminum stays Zip-off daypack with organizer pocket and large capacity main compartment Torso adjustment, adjustable stabilizer straps and adjustable side compression straps Padded back and shoulder straps with Air-Flow mesh and detachable padded shoulder tote strap Capacity: 3965 + 1340 cubic Inch (65 + 22 L)