TriadTM Orthotic. Step up to the most advanced insole ever made. TriadTM Provide outstanding support to the three zones of the feet 1. Balls - of - feet 2. Arches 3. Heels. No other insole does a better job of relieving knee, leg and back pain. Provides superior shock absorption to reduce fatigue. 3/4&quote; length allows toes to move freely. Built in odor protection with Ultra Fresh®. The insole is made of Poron® a unique substance that adds more spring and transmits more energy than ordinary insoles. Poron® also provides a comfortable gels fit and is lighter in weight to any other kind of insoles. No other imsoles absorbs the shock as Profoots TriadTM with our proprietary urethane cells Poron®.