I want to get a long black coat but don't know what criteria to put in when searching. It's the king of smart coat that you see people wear at remembrance parades, possibly made of wool? I'm also a size 20 so there a number of shops that don't go as high as that which is frustrating. I keep finding more casual style ones but I'm specifically looking for something appropriate for remembrance, funerals etc.
I'm sure this is really basic but can't for the life of me think.