モールドカップ

noun

molded cup; molded bra cup

Refers to a seamless, pre-shaped cup in bras and lingerie, made by molding fabric or foam. Common in fashion and apparel contexts.

• このブラジャーはモールドカップで、Tシャツの下したでも響ひびきにくい。

  This bra has molded cups, so it doesn't show through easily under a T-shirt.