입는 게

wearing

→ 입다
phrase Rare #20,019
wearing 게 is a shortened form of 것이, making the action of wearing into a noun phrase. Depending on context, it can also mean “the thing someone wears.”
KO: 저는 편한 옷 입는 게 좋아요.
EN: I like wearing comfortable clothes.

속옷 입는 게 비밀 인가요?

Is wearing underwear a secret?

— 어 퓨 굿 맨 (1992)

그러니까 바지 좀 입는 게 좋겠다

So you'd better wear some pants

— 어바웃 타임 (2013)

당신은 제복 입는 게 더 멋져요

You look cooler in a uniform.

— 중경삼림 (1994)