Living in Arizona I need something to keep the sun off the RV. I purchased the ADCO rooftop cover for use during the non-summer months, thinking it would be easier to handle than a full cover. On the first installation most of the tie down straps pulled apart. The aluminum tubes that were supposed to fit under the tires wouldn't straddle a 22.5 inch motorhome tire. I rebuilt what was left of the cover with stronger material and got a couple of years use out of it. I think it was a good concept, cheaply executed.