Easy to use and serves the purpose.  I have an F250 and these just barely fit across the bed.  There is some flex to them because I'm asking them to cover a fairly wide expanse so I don't expect them to hold any kind of weight in place.  When I move heavier items, I take these out which is very easy to do.  They work well at holding in bags/containers/plants, etc.  I bought 2 and am pleased with my purchase.