Waterproof & abrasion resistant adventure packs  Loads of mounting options for other OS luggage packs  Roll-top closure & high visibility details for low light Serious luggage for serious adventures. The new range of Kriega adventure luggage has been developed based on ideas and comments from renowned adventure riders. At the heart of the new Kriega Overlander-System is the OS-32 Soft Pannier, which these smaller OS bags attach to, to create a custom luggage setup. Functionality and features. These packs have roll-top closures and 100 percent waterproof liners. They have integrated loops for attaching to the OS-32 pannier or to the bike itself and shoulder strap loops mean you can carry the packs around easily when off the bike. Hi-Vis detailing at the front and the back help you get better seen in lower light conditions. Abrasion resistant for rocky ground. These OS packs are constructed from top quality materials like 1000 denier Cordura, ultra-abrasion resistant Hypalon and aircraft grade alloy buckles.