Dear Folks: On certain vintage jackets that I have seen, including some I own, the jacket collar rolls up in the back, exposing the felt. Here is an example: Check the picture of the close-up of the back. This seems to happen irrespective of the quality of the garment, but only seems to happen in garments a few decades old, or more. Some 50 year old jackets still have collars that sit just great, while others only 20 or 30 years old suffer from this, so it is not purely an effect of age. My first question is, why does this happen? What shifts? Or what shrinks? My second question is, how may it be corrected, if at all? With my own jackets suffering from this condition, the dry cleaner may steam-press the thing into approximately the right shape, but it seems a losing battle.