Classic Accessories OverDrive PolyPRO 1 Pop-Up Camper Trailer Cover, Fits 16' - 18' Trailers - Breathable and Water Repellant RV Cover (74603) Light but strong PolyPRO 1 RV covers by Classic Accessories provide the perfect blend of protection, strength and value Single layer PolyPRO 1 fabric repels water and protects against dirt and scratches Elasticized bottom corners for a tight fit Breathes to reduce mold and mildew buildup Storage bag and tie-down rope included