Reinforced Corners Help Prevent Tearing. Soft Guard Foam Inserts Protect Cover From Sharp Edges. Air Vent System And Quick Drying Fabric Combine To Reduce Wind Stress And Vent Inside Moisture. Tension Panels Reduce Cover Stress When Tightening The Strap. Adjustable Tension Panels And Elasticized Hem Corners Provide A Custom-Like Fit. Integrated Undercarriage Strap System With Click-Close Straps, Connection Points On Each Side And Weighted Toss Bag System Eliminates Crawling Under The RV To Install The Cover.