BLACK 600 DENIER Jet Ski Cover jetski Kawasaki Ultra 310X SE 2014 2015 2016 2017 EXTREMELY Heavy Duty Jet Ski Cover: 600 Denier Marine Grade Solution dyed Polyester. It means colors are part of the polyester fiber itself, rather than the dye adhering only to the surface of the fibers. This cover offers superior resistance to harmful UV rays, fading, mildew, tearing and overall wear-and-tear. Our Jet Ski Cover is designed for Trailering, Mooring or Storage. Semi-Custom Fit. The Fabric is Breathable, Water Resistant, UV Proof, designed for all weather protection and to Resist Mold, Mildew,UV Rays to keep your watercraft brand new looking Heavy-Duty elastic shock cord in the hem of jetski cover, zippered Opening access for gas tank, Opening for trailer hook in the front. Free Storage Bag, Air Vents and Tie Down straps Inclulded.