Large weather resistant trunk bag based on the popular MTX DXP, but with Velcro mounting straps. Complete with fold-out panniers, expanding top, and water bottle holder.600 Denier Polyester Dupont Teflon Coating for superb weather resistance,Expandable, divided main compartment with two side panniers,Padded foam walls protect load,Elastic top bungees,3M reflective strip for safety,Built-in carrying handle, plus detachable shoulder strap,Compatible with all rear racks,Safety light clip,36x25x21.5/29cm,22.6L,995g.