MAR-MTRCV-F9-0B This particular cover is for all F75B & F90B Yamaha 4 Stroke Outboards. It is constructed of durable SurLast solution-dyed polyester fabric. SurLast fabric offers the ultimate in protection against the harsh marine environment. This non-abrasive, water resistant cover is also resistant to UV rays, mold, and mildew for added protection of your coveted Yamaha outboard. The cover features an adjustable snap-buckle strap for a secure and snug fit.