Therm-ic Sole Perform Heated Insole 2014 - Avoid cold, numb feet this winter by picking up the Therm-ic Sole Perform. These heated insoles fit all Therm-ic battery packs and come in an anatomical 3D shape for added support so not only will your feet stay warm but will also be comfortable. A support stabilizer gives you a better distribution of forces and provides you with a perfect fit. An EVA foam structure adds to the comfort of the Therm-ic Sole Perform. Features: EVA foam structure. Bearing Grade: Recreational, Model Year: 2014, Product ID: 248548, Model Number: 0104000601, GTIN: 9004290162692