The Designer Series Olefin HD Class A Motorhome Cover provides unmatched protection from the elements for 28 foot – 43 foot Class A RVs, including rain, snow, UV rays, dirt and grime. Featuring an extra reflective layer on top to keep your RV cool while in storage, the ADCO cover also utilizes built in vents to allow moisture to escape, and evenly spaced zipper access panels on the passenger side for easy entry into your RV without having to remove the motorhome cover.