What is inside skirt in South Africa?

“inside skirt” in Canada maps to canonical inside skirt (plate: Transversus abdominis muscle — the inner diaphragm muscle). In South Africa, look for labels such as inside skirt. The 'other' skirt steak. Thinner, wider, and slightly tougher than the outside skirt (which is the standard 'skirt steak'). Most restaurant fajitas use inside skirt because the outside skirt is exported or sold at premium. Requires high heat, fast cooking, and slicing against the grain.