YOU SAID:
My hat is not comfortable
INTO JAPANESE
私の帽子が快適ではないです。
BACK INTO ENGLISH
My hat is comfortable, is not.
INTO JAPANESE
私の帽子、快適ではないです。
BACK INTO ENGLISH
Not my hat and comfortable.
INTO JAPANESE
ない私の帽子で快適な。
BACK INTO ENGLISH
Not my hat and comfortable.
That didn't even make that much sense in English.