Abstract: A removable stud or cleat assembly for footwear is provided, particularly for athletic or sports footwear. The stud or cleat assembly includes a stud having a first and second mounting structure and engagement structure located on the sole of the footwear and configured for engaging the first and second mounting structure of the stud. Engagement of the stud is achieved by aligning the first mounting structure relative to the engagement structure, temporarily deforming the second mounting structure and rotating the stud relative to the engagement structure to thereby securely engage the first and second mounting structure with the engagement structure. Disengagement of the stud from the engagement structure is achieved by biasing the second mounting structure to disengage the second mounting structure from the engagement structure and rotating the stud relative to the engagement structure to thereby disengage the first mounting structure.

Abstract: A removable spike or cleat assembly for footwear, including a sole, wherein the assembly includes a spike or cleat constructed from an elastically deformable material and including one or more leg members and mounting apparatus adapted to engage with the sole, wherein the spike or cleat is adapted to engage with a projection located on the mounting apparatus, the engagement between the spike or cleat and the projection being achieved by rotating the spike or cleat relative to the projection and at least partially inserting the one or more leg members into one or more apertures located on the mounting apparatus, and wherein the spike or cleat is disengaged from the mounting apparatus by producing an elastic deformation of the one or more leg members.