Dr Scholl's P.R.O. Orthotics Pain Relief, For Arch, Men's Size 8-12 All day, every day. Immediately treats your pain at its source. Shock Guard absorbs impact with every step. Is this right for me? Dr. Scholl's Pain Relief Orthotics (P.R.O.) Arch is designed for people who suffer from arch pain caused by flat, weak, fallen, or high arches. How does it work? The lightweight insole provides extra arch support just where you need it most to help prevent arch pain.