PermaPRO (tm) Travel Trailer Covers, fits up to 20'L, 118" max H. * Manufactured with Rip-Stop technology Rip-Stop fabric is strong, light weight, dramatically improves tension strength and minimizes the chance of tearing. * Distributed Stitching Pattern Ensures even distribution of tension throughout the cover, reducing failure of individual straps. * New and Improved Strapping System Includes a weighted toss bag making installation easier than ever. No more crawling under your RV to install tension straps. * Front and Rear Tension Panels and Elasticized hem corners Provide a more custom fit. * Air Vent System Reduces wind stress and inside moisture. * Sophisticated Zipper System Long zipper pulls allow access to any part of the RV even when covered. * Expanding Bag Rip-Stop zippered storage bag which expands for easy storing. * Longest Warranty in the Business 4 year hassle-free warranty.