Switch Out Front Boning To Steel-Instead of Fiberglass Rods*For this corset alteration, I take out our sturdy, rigid fiberglass rods and replace them with 1 2" steel boning. *This is good for people who are extremely short waisted (generally under 5'1"), have floating ribs that can't stand much pressure, or who simply cannot maintain a straight posture for numerous hours. This can be a good option for making the corset wearable underneath clothing, on an every day basis, as it provides much firmer structure