Metallic insert for working and safety shoes

摘要

The metal insole is characterised by the presence of ribs in the area of the arch support comprised between the heel (3.3) and the arch of the sole (4). <??>The ribs (3) are applied so as to counteract longitudinal and transversal torsions of the arch support and are characterised by a semi-circuclar section (3.1) or alternatively a triangular one (3.3) or of any concave or convex form. <IMAGE>