The TPR sole is the most common material. But in daily life, many people are not sure if this part of your shoes is what we call the TPR material, then I will teach you the recipe for the most simple way to identify. To clarify the TPR must first distinguish different outsole material area.hermo Plastic Rubber is one of the latest technologies used to create mold-injected soles, including polymers and high tech resins. This sole offers superior comfort to ordinary die cut soles, because it is flexible like a traditional leather sole but also washable and more durable.