The present invention relates to an inflatable lining (20) comprising a control unit (26), at least one inflatable bag (22) and at least one gas source (24). According to the invention, the inflatable lining (20) further comprises automatic enabling means (28) suitable for switching the control unit (26) from a first operative mode to a second operative mode and viceversa. In the first operative mode the control unit (26) is set so as to ignore any identified danger situation, while in the second operative mode the control unit (26) is set for activating the gas source (24) when a danger situation is identified. The automatic enabling means (28) comprise receiving means suitable for acquiring data from at least one external data source and for maintaining the control unit (26) in the first operative mode in case no data can be acquired from the external source or the acquired data identifies an external source incompatible with the lining mounted inflatable protector (20). The present invention also relates to a protective clothing assembly (1) comprising at least one garment (10), provided with identification means (12), and said inflatable lining (20).