Aetrex Cleats Orthotics are the first collection engineered specifically to perform in cleated athletic footwear for sports such as soccer, football, and baseball.  Anti-microbial film helps reduce odor. Anatomically placed Lynco(r) Arched Support helps alignment and injury prevention. AeroCell (TM) polyurethane base helps absorb shock and retain shape. High-tech mesh top cover maximizes airflow. Metatarsal support reduces pressure from ball-of-foot. Cupped heel provides balance and stability. (These notes are from the package.) L1205(TM)  Purchased in 2021 and never used.