elasticated /ɪˈlæstɪkeɪtɪd/

• 1. 

  ADJ If a piece of clothing or part of a piece of clothing is elasticated, elastic has been sewn or woven into it to make it fit better and to help it keep its shape. 织入松紧带的 [英国英语]

  例：

  The matching trousers have an elasticated waist with drawstrings.

  这条配套裤子的裤腰有松紧带。