Sport footwear for practicing winter sports comprising a shell (11) made of a first thermoplastic material and comprising a toe coupling projection (12) at the front and a heel coupling projection (13) at the back, configured to couple releasably to the bindings of a ski or snowboard. The sport footwear comprises at least a coupling projection protection cover (15, 16) releasably attached on at least one of, or both, said toe coupling projection (12) and heel coupling projection (13), and said at least one coupling projection protection cover (15,16) is made of a second thermoplastic material.