YOU SAID:

Hey man, how big is your hot air balloon?

INTO JAPANESE

こんにちは、あなたの熱気球の大きさは？

BACK INTO ENGLISH

Hello, the size of your hot air balloon?

INTO JAPANESE

こんにちは、あなたの熱気球のサイズは？

BACK INTO ENGLISH

Hi, what is your hot air balloon size?

INTO JAPANESE

こんにちは、熱気球のサイズは？

BACK INTO ENGLISH

Hi, what is the size of a hot air balloon?

INTO JAPANESE

こんにちは、熱気球のサイズは？

BACK INTO ENGLISH

Hi, what is the size of a hot air balloon?