ATG Overlander Saddle Bag:

ATG has put some thought into the Overlander saddle bag. The outer bag is IP 66 graded. Waterproof, Dustproof and mud/sand proof. The inner bag the holds the products of the trip is also IP 66, this inner bag slides into outer bag making it easy to use. He motorcycles doesn’t have to take the whole assembly off on a 10day trip. ATG saddle Overlander bags have a roll down system to close the bag and secure the content.  ATG is the best for the soft luggage system application.