PermaPRO covers by Classic Accessories provide maximum protection from rain, snow, dirt and UV damage. Ripstop fabric is stronger and 57% lighter than most RV covers available. Rolling up and storing your RV cover has never been easier. Each cover comes in an expandable storage bag that unzips to reveal five additional inches of height in storage space. The bag can fit into storage spaces as small as 13″ x 23″ x 18″.