Invented by podiatrist Dr. Les Appel to relieve heel and arch pain, while preventing foot strain and injury. * Helps with Arch Pain, Fallen Arches, Flat Feet, Weak Arches * Flexible polypropylene embedded in the insole supports the arch, helping to prevent overpronation. * Polyethylene foam cushions your steps. * Sanitiz fabric cover reduces slippage and heat, helping keep feet drier.