j1 insoles provide true support - not just cushion - for your flat feet and are clinically proven. j1 insoles come in two styles; one for Flat Feet and the other for High/Average Arches. J1 insoles were developed by Dr. Lorri Riley, who has been a podiatrist for over 20 years. J1 insoles are made of a medical grade plastic shell such as the plastic used for prescription orthotics. j1 insoles are semi-rigid to allow some flexion of the foot, but not just cushion, to provide the support your foot needs. The top cover is EVA foam, which is closed cell foam to resist bacteria and provide cushion. j1 insoles come in 8 adult and 7 children sizes to allow the arch the proper support - you don't just cut j1 insoles to fit. The sizes are intended for the shell to go to the metatarsal head to allow maximum support - 3/4 insole length allows for extra room for toes in your shoes. j1 insoles are made in USA.
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