All of the seams on the cover are double overlapping for extra strength. An interesting detail is that the thread used is white. It is to prevent the color from bleeding out of the thread if the cover is wet for a long time. Bleeding can actually stain light colored paint!
We have been using the cover for several weeks and it resists dust, dirt and morning dew and sprinkles very well. It never really rains here but we feel that it will work better than any other for protection from the rain! The fabric’s breathability will help protect the car from condensation damage as well.
For a car that stays indoors most of the time but is occasionally left outside overnight, Weathershield is probably your best choice in fabric but for a car that is stored outdoors or parked in public, nothing can beat the protection and imperviousness off Weathershield Plus as long as the weight and slightly increased bulk doesn’t bother you in storage. To top it all off Weathershield and Weathershield Plus covers are warranteed for six years even in tough outdoor use. We find that alone to be simply amazing as no cover we have every owned before lasts even a year! Great stuff.