The Topeak Backloader is a fantastic flexible Bikepacking Saddle Bag, for carrying all your extra gear around in, without having the hassle of a bike rack. Constructed from weather resistant polyethylene/nylon fabric and featuring a roll-top closure with an internal dry bag, it keeps all your cargo nice and dry. The mounting system has handy compression straps, which reduces the amount of rocking associated with heavy loads, ensuring comfort for those long rides.