FM™, which stands for Firm Material, is a 65 durometer, heat moldable EVA.
It is grindable and is one of the highest sources of rigidity for orthoses, short of plastic.
Use FM™ for the bottom-most arch filler of foot orthoses.
It works equally well as a mid-sole material.
• Base and central core in foot orthotics
• Midsoles and rigid posting
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