Vllt. can you write, how the optimal material condition should be. The small box will probably winter outside. So rain/snow will be included. At the moment is a LIDL-plane on it. But it will probably slowly give up the mind after 3 years. So what has been, which is suitable permanently for years to hold. Packaging mass is not interesting. Polyester, PVC etc. are often to be found. What “quality” with fluff i inside it can be quiet.