1. The best choice for a long-distance journey, the 2-in-1 pannier can be put across both sides of a rack 2. Left/right side pockets w/rear reflective label 3. Large inner bag space, no separation layer, flexible use 4. Straps at inner side of the saddle bag can be adjusted according to rack height, which makes the bag steady on the rack. 5. Front/back sets of firm binding-straps design can be tied onto the rack