The Budge Standard Class B RV Cover will provide your RV with basic outdoor protection against the elements. This RV storage cover has a top panel that is made from a 3 layer water-resistant spunbond polypropylene. These single layer side panels are durable and lightweight, making the cover easy to handle. This class B RV cover also includes full height zippered panels, so you can access your RV or motorhome while it is covered. The standard RV cover will protect against sun, dirt, occasion rain and heavy dust. Air vents are included on the top of the cover to prevent billowing. This cover comes with a rope securing system to keep the cover secure to your RV and elasticized bottom corners. Cover is breathable and UV treated.