Kinhongtoa Puffer Coat Tag is 3x (I wear large but too small) I say size Medium

Kinhongtoa White Puffer Coat with double zipper and snaps. Can pull up one zipper when sitting in the car. Also has a removable faux fur collar. Tag states a 3x (I wear large but too small) I say size Medium…So, I had my sister try on and it’s a perfect fit (she wears size medium)