We had one made in Florida last year. Ours was made with snaps and we store it rolled up behind the sofa when not in use. If your parked facing the north and get the morning and evening sun in the rear window, it cuts down the glare and helps the AC. I thought it was worth it. It was made at the campgrounds on our lot by a traveling vender in Encore, Orlando last year for 130.00.
ken and Velda
Dahlgren Va
2005 3475 Montana
2005 2500HD GMC 4x4 Crew cab/duramax with edge and attitude and a 45 gal fuel tank.