Eh honestly the nurse and the binder brands are both kind of right, but for different reasons, some binders are designed to sit above the incision so there's no direct pressure on the wound, while others are meant to go right over it with a soft cloth layer in between to cushion the area. My friend who delivered at KKH said her nurse specifically folded a thin cotton pad between the binder and her incision so it wasn't direct contact, and that helped a lot with both support and pain when moving around. The key thing most mums agree on is that it should never feel like it's digging into the wound, if there's any stinging or the dressing feels disturbed, that's a sign something's off. Since you already have a nurse who showed you one way, honestly the safest is to just clarify with your doctor or the ward nurse before discharge, because each incision and dressing type can be a bit different!