1, 4 layers polypropylene heavy duty cover for perfect outdoor use. 2, Upgrated Anti-UV and Anti-tearing for long service/using time 3, 100% water resistant but also breathable. 4, Vacuum packing for saving volume and delivery cost 5, Warranty: 2 years. 6, As an experienced motorhome cover manufacturer and supplier, OEM, ODM and custom-made RV covers are available with product warranty.