This coat is made of high-quality broadcloth, which feels very soft to the touch.

broadcloth 是由 broad（宽的）和 cloth（布料）组成的复合词，字面意思是"宽幅布"，实际指一种质地细密、表面光滑的棉质或混纺平纹织物，中文常译为"细平布"或"阔幅布"。这种布料因幅面较宽且质地均匀而得名，常用于制作高档衬衫和外套。