Material is very sturdy. I’m sorry for the guy who ripped his cover right away and thought the material is thin. I suspect he tore it on the little gutters. I use tennis balls. Works like a charm. I have a 28’ trailer but it has a pronounced slope in front. I took a chance and got the 24-27’ cover. It fits perfectly, covers from ladder to propane tanks. I put the storage bag over the TV antenna to protect the cover against chafe. There are no throw bags for the straps underneath but overall everything is well thought out. Very pleased.