Local. Sustainable. Specialists. 4.6 Heel Expansion. Prescription Bytes. 4.4 Medial & Lateral Arch Expansion Ratio 4.5 Arch fill at Sub Navicular 4.7 Maximum Heel Width 4.8 Internal Heel Cup Height 4.9 Anatomical Fit (Total Contact Insole) Members Archive YouTube Archive Ready to Prescribe ? Electronically Download Form