You’ve seen them at the grocery store and at the mall. You’ve probably even seen them on TV and online. Shoe inserts are any kind of non-prescription foot support designed to be worn inside a shoe. Pre-packaged arch supports are shoe inserts. So are the “custom-made” insoles and foot supports that you can order online or at retail stores. Unless the device has been prescribed by a doctor and crafted for your specific foot, it’s a shoe insert, not a custom orthotic device—despite what the ads might say.Shoe inserts can be very helpful for a variety of foot ailments, including flat arches and foot and leg pain. They can cushion your feet, provide comfort, and support your arches, but they can’t correct biomechanical foot problems or cure long-standing foot issues.