Tough-1Leather Bucking RollsMedium OilWool Filled52-7080-33 The bucking rolls are two padded pouches(filled with wool) that are added to the front of the saddle seat to supplement the swells and help a rider stay in the saddle. They are created with a curved shape to conform to the contour of the saddle. Theyre attached to the saddle with saddle strings or screws.