The covers are designed to protect the aircraft from UV radiation, rain, wind and dust. The outer fabric of the covers absorbs this energy and therefore ages depending on the strength of the radiation, the movement and the duration of exposure. If materials such as truck tarpaulins were used, the service life would be almost unlimited, but unfortunately condensation forms under such covers, which cannot breathe, and this is very damaging to the paintwork. After our experience with test covers in the USA and on the aircraft of "professional glider pilots", we are convinced that Clouddancers covers are at least as durable as competitor products.