"Adjustable front and rear tension panels provide a custom fit. Repels rain and snow, yet vents inside water vapor out. Prevents mold, mildew and ice buildup. Elastic Corners Yes, Cover Height in. 140, Tie-Downs Included Yes, Side Layer qty. 1, Fits Length ft. 30-33, Air Vents Yes, Material Type Polypropylene, UV Inhibitors Yes, Top Layer qty. 3, Product Style RV Class A, Zippered Access Yes, Storage Bag Included Yes. Includes rear ladder cap Color is Grey / White Class A"