When the sticker came, I was surprised by the good packaging. The label was packaged in a Papptasche and this was again in a cardboard box. So with the label anything could happen. In the Papptasche were then the sticker, a "sample sticker" and a manual for dummies. So you can, if you are proficient in German, not go wrong. Especially as you get a sample label, with which you can test whether the glue actually keeps to the desired substrate. For me it was a no-brainer to real wood doors (painted) affixing the sticker. Took whole 5 minutes. The label itself makes an impression of quality and keeps the bomb. No blistering or the like. Can only be recommended.