doublées
Doublées is the feminine plural form of the French past participle of the verb doubler and of the adjective doublé. It is used to describe a feminine plural noun that has been duplicated, twofold, or reinforced by a second layer or copy. As an adjective or participle, doublées agrees in gender and number with the noun it modifies.
In manufacturing and construction, doublées describes elements that come with two layers or copies, such as
Doublées functions as an adjective or a past participle and thus agrees with the noun it modifies.