The self-adhesive backing makes it easy to decorate large areas of terrain easily and quickly. The adhesive is semi-permanent, so if you if you dont get it straight first time you have a bit of leeway to reposition it. Professionally printed in the same design as the waterslide decals. The glossy paper works well to give definition to the signs in the same way that real workplace signs are usually shiny plastic. Easily matted down with matt varnish if you so choose.