Silver Jet Ski PWC Cover Yamaha Wave Runner GP1200 1997 1998 1999 2 Seater 420 DENIER WOVEN POLYESTER MATERIAL. Designed for storage and trailering pursopes. Semi-custom fit Jet Ski cover with an integrated trailering system Technologically advanced Marine Grade Poly fabric for the best sun, rain, dirt, mildew protection. Rear air vents reduce inside moisture and wind lofting. Elastic cord sewn into bottom hem for a fast, snug fit. COLOR: Reflective Grey