Your aluminum is coming from China. The vast majority of it in the world comes from China and as everyone knows the overseas shipping of goods is at best in a terrible spot currently. Many of the components in fiberglass resin come from China as well.
We are all getting a tough lesson in supply, demand, and globalized economics.
Another poster was talking about this with me a few months ago and didn’t understand as their specific topper was “MADE IN THE USA.” I had to remind them that essentially means it was assembled here, and the components for it were made elsewhere.