BikeSheath (XLL-GYBK-04-04-BR Black/Grey Insets Waterproof Seat and Tank Cover Completely waterproof fully laminated backing to prevent wicking of moisture Constructed of lightweight polyester knit material to withstand harsh outdoor elements Machine wash/dry; withstands over 200 washes Protects your seat and tank from harmful sunlight when parked Optional driver's backrest cover doubles as storage bag; Black/Grey Insets