One size fits most motorcycle trunks Designed to work with a wide range of trunks and compatible with motorcycle backrest pads and back pad cushions for a stable, secure fit. Back support and comfort Provides steady back support for both rider and passenger, helping reduce fatigue on long rides. Works with a passenger pad and backrest to enhance overall comfort during extended trips. Comfortable backrest for an enjoyable journey Offers reliable support during rides, helping you stay comfortable and maintain a relaxed posture. Functions as a trunk cushion to accompany the backrest pad. Vibration and shock dampening for smoother rides Helps absorb shocks and vibrations from uneven surfaces, delivering a smoother and more comfortable experience for passengers. Serves as a backrest pad and top case cushion to improve ride quality. Use scenarios - Long highway trips with a passenger: the back support and cushioned backrest reduce fatigue and improve comfort on extended rides. - Daily commuting with a top case: the universal fit and cushion provide added back support and a smoother ride during urban and suburban trips. - Weekend touring with luggage: the backrest and trunk cushion enhance passenger comfort while accommodating luggage in the top case.