This jacket and cap have been preserved and stored well together and do not show much wear or detrimental aging problems and appear in very good shape. These items are suitable for immediate wear or display.
There is no size information displayed on either item that I could locate; but based on estimates from myself and others who have seen these and tried them on, I would guess the flight cap is close to about a 7 to 7-1/8 size and the jacket somewhere from 38 to 40. If you are interested and need me to take any precise measurements for you I can do that, just let me know what to measure.