Designed with 5 layers of non-woven fabric on the top and 3 layers on the sides, this fifth wheel RV cover can provide excellent protection against UV, snow, dust, and scratches. Heavily reinforced edges and corners further improve the anti-aging ability of your RV. The RV cover increases the anti-UV agent from 3.5% to 4.5%, enhancing the anti-UV ability by 28%! The 5 layers of non-woven fabric on the top, mixed with an anti-UV composite and waterproof membrane, offer upgraded anti-UV properties and deliver higher ability in avoiding aging, disintegration, and tearing of the top fabric. By using gutter covers, our 5th wheel RV cover will protect your RV for longer. 12 inner bottom windproof straps are more anti-aging than others, which will further increase wind protection. 3 extra ultra-long straps are specially designed for overall stability and better windproof protection. Elasticized hem corners and 3 adjustable front and rear tension panels provide a custom fit.