This +1 lamellar cuirass grants its wearer shapeshifting.
On command, the wearer of a shifting jerkin can change her appearance at will as per disguise self. If the wearer has a talents class feature (investigator talents, ninja tricks, rogue talents, or slayer talents), once per day she can spend 1 hour to swap out one talent for another for which she qualifies. She can’t swap a talent that is a prerequisites for other talents or feats she has.
Pathfinder Player Companion: Armor Master’s Handbook © 2016, Paizo Inc.; Authors: Alexander Augunas, Robert Brookes, Anthony Li, Luis Loza, and David Schwartz.