Givi Top Case Backrest Pad (For Outback 42 Liter) Fits Givi Trekker Outback 42 Liter OBK42A and OBK42B (Does not fit the new OBKN42A or OBKN42B cases) Dimensions: Lower pad 9" w x 3.5" T x 1.25" D, Upper pad 5" W x 3.5" T 1.25" D Attaches with double stick tape