PolyPro™3 R-Pod Trailer RV Cover up to 18.5 ft. Thick triple-ply Polypro 3 top with breathable single-ply Polypro 1 sides protect against rain, snow, dirt, nicks, and scratches for all-season protection. Its integrated air vent system combines with the quick drying fabric so your cover will endure through inclement weather. Enjoy a custom-like fit with the adjustable front and rear tension panels and elasticized hem corners. The cover features zippered panels that roll up and allow access to the passenger side so that you don't have to take the whole thing apart just to get inside your stored trailer. With an integrated strap attachment system and a provided toss bag, you won't have to crawl under the RV as much as you might with other styled covers. A storage bag and tie-down straps are included, and while the fit dimensions include the trailer and hitch, the cover is for the trailer only.