The Winnebago cover features a multi-layer top and side panel for maximum protection in all climates. With built in vents, it is 100% breathable to eliminate mold and mildew. Extra reinforcements are added to prevent snags and tears. The zippered entry allows for easy access to the unit. The front, rear and bottom buckle cinching system removes slack and secures the cover. The classic design is the perfect addition to your Winnebago RV.