Teardrop camper cover upgraded the fabric from a 3-ply top to a 7-ply top non-woven. It has improved softness and stretching performance across the board and can provides excellent protection against dust, dirt and scratches. The teardrop trailer cover is enhanced with waterproofing properties by treating 3-Layer Water Resistant PU Coating on the backside of teardrop travel trailer cover which can withstand up to 2000 Pa Water Pressure. 3 Air vents- 2 on both sides,1 on front side can effectively reduce wind stress, accelerate air circulation. Quick-drying system protect your beloved rv get rid of moisture. On each side 2 pcs tension panels + straps & buckles at bottom are for better protecting camper cover against blowing away and tearing by heavy wind; Elasticized hem corners, adjustable front and rear tension panels provide a snug fit. Fits all types of fiberglass campers well.