The Back on Track ankle brace takes things a step further by not only providing the stability and support that comes with any ankle brace, but by leveraging Welltex technology, which provides therapeutic support to your ankle. Welltex technology uses your own body's energy to create a soothing far infrared effect, providing relief to sore muscles. Our ankle brace also exposes the heel, providing a comfortable fit for any foot. This ankle brace is FDA approved.