【Heavy Duty Fabric】Designed with 7 Layers of non-woven fabric on the top and 3 layers on the side, this 5th wheel rv cover provide excellent protection against UV, snow, dust, and scratches. Mixed with anti-UV composite and waterproof membrane, our 5th wheel cover offers higher anti-UV property and greater ability to prevent fabric aging, decomposition and tearing of the top fabric. 【Excellent Windproof & Custom Fit】3 extra-long straps are specially designed to ensure overall stability and better windproof performance. The inside bottom windproof straps with buckles provides easy installation and quick release, keeping your cover firmly in place to prevent the cover from blowing away. Inner designed straps are more resistant to aging than other outside windproof straps. Elasticized hem cor.