The Acerbis X Seat for Husqvarna, Yamaha, Honda, Kawasaki and Suzuki.  3 different kinds of materials 1 Plastic support for reinforcement and resistance 2 Expanded foam for comfort 3 Customized fabric for protection  ACERBIS X-SEAT Single piece Internal expanded foam for maximum performance Fully external plastic shell with different grips Retaining grip Polished finishing Antislip grip Retaining grip  Fully waterproof. Washable with pressure washer and with several solvents even if it is already mounted on the bike