MAR-MTRCV-11-25 - This particular cover is for a Yamaha 3.3L V-6 F250 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. The cover features an adjustable snap-buckle strap for a secure and snug fit.