The inner head band and outer shell of the ear cups are aluminum and the rest is plastic and synthetic leather. It serves the purpose I was going for, and I am satisfied. The slides are as cheaply made as they could be and still remain functional. I purchased a massive amount of different types of command strips in the first part of 2019. ??????????????????????????????????????????????????????????????????????????????????????????? Keeps my very expensive Airpods protected, I would recommend. " They dont but he doesnt seem to care. Im 12. The Sony MDRZ7 is just feels thinner in the mid range, and the mid bass bloat doesn?t help either. That would be one improvement that I would have liked to see.