The sleeve was in a carrying case made of plastic and is of very good quality -. Not so cheap material that hard and brittle after a short time - it also feels good to and can easily be slipped over the swing. We have chosen also because of the other reviews for this protective sleeve. Since we have these first few weeks in use I can only say that rain can not harm you. In addition, in the shell eyelets are also attached, by a supplied string to lash the envelope yet assured. All in all, we are very happy with it and can make a recommendation, only the stowage of the envelope in the pocket provided is a Pfrimelei - therefore only four stars.