Mould and method for producing footwear

A mould for producing footwear by means of direct injection onto an upper of a sole comprising a tread and a midsole, wherein the midsole is composed of a first layer and a second layer;

• the mould comprising a base, a pair of first half-rings, a pair of second half-rings, a first cover, a second cover and a mould last, wherein the first half-rings are designed to be brought together so as to abut against the base and against the first cover, so as to form a first mould cavity for moulding the tread, and/or to abut against the base and against the second cover, so to form a second mould cavity for moulding the first layer of the midsole;
• and
• wherein, with the first half-rings abutting against the base, the second half-rings are designed to be brought together, so as to be superimposed on the first half-rings and to abut against the upper, fitted onto the mould last, so as form a third mould cavity for moulding the second layer of the midsole;
• the mould being characterized in that it comprises gripping means designed to fix selectively the first half-rings to the base or to the second half-rings.