A neck protective device, comprising at least two protective elements (100), partially overlapped therebetween, supporting means (200) and respective connecting means (300) of the protective elements (100), and characterized in that the connecting means (300) is apt to allow the mutual rotation of the protective elements (100), working as hinges along different axes of rotation (401, 402), in a manner such that the protective elements (100) slide the one against the other one.