When this dweomered chapeau is donned, the wearer is able to assume the role of a character of any profession different from that he or she actually follows. 

This magical headgear only empowers assumption of 1st-level ability, but as long as it is worn, the possessor is able to act as a member of the named profession. 

Any experience thus gained is in the assumed role only, but it is cumulative, so if in several wearings the individual actually goes to 2nd level, then he or she will retain that level whenever adorned with the hat and desiring to assume the different profession. 

Such progress may continue indefinitely, but if the hat is discarded, lost or stolen, or not within a one-mile radius of its owner for any 24-hour period, then all experience in the different profession is likewise lost.

The hit points of the character are always those actually possessed, just as all ability scores are those of the actual character.