The givi back support cushion for e460 topcase e79 is packed with features specifications include material polyurethane foam easy to fit comes with a measuring template and diagrams showing how to fit it adds comfort and back support perfect for long journeys fits designed to fit the e460 monokey 46 ltr top box fittings all fittings are included to attach the back rest to the top box please note givi backrests may require drilling holes in the topcase to fit