Abstract: A saddle bag insert 10 for use with a soft sided saddle bag 100 having front 101 and rear 102 end panels, a pair of side panels 103, 104 and a floor panel 105. The saddle bag insert 10 includes an insert member 20 fabricated from an elongated, thin, flat, contoured strip of rigid yet flexible material 21 having an intermediate segment 22 and a pair of end segments 23, 24 that are adapted to resiliently conform to the contours of the front and rear end panels 101, 102 and the floor panel 105 to provide rigidity to the soft sided saddle bag 100.