革製

1. Origins, structure, and basic meaning

• Structure: 革製 (かわせい) means made of leather. The examples use an attributive form and a material state limited to one part.
• Basic usage: A sturdy leather bag is inherited; only a chair's seat is leather.

2. Common pitfalls and similar expressions

• Material of a whole product and material limited to one component
  • 革製のかばん modifies the whole bag; 座面だけが革製 restricts leather to the seat. Do not miss limiter だけ.