YOU SAID:

I was following the pack all swaddled in their coats

INTO JAPANESE

私は彼らのコートに包まれたパックを追っていた

BACK INTO ENGLISH

I was following the pack wrapped in their coat

INTO JAPANESE

私は彼らのコートに包まれたパックをフォローしていました

BACK INTO ENGLISH

I was following the pack wrapped in their coat