Excellent stability, perfect for dress and casual shoes. Moldable Spenco ThinSole Orthotics are designed to support your foot's arch and absorb the shock of everyday activity. The unique shell provides excellent stability without the added bulk of most orthotics. The shell is bonded to a layer of closed-cell nitrogen-injected Spenco Material and covered with 4-way stretch nylon. Spenco ThinSole Orthotics are a perfect fit for dress and casual shoes.