Hammertoes are a condition where the toes draw up and the knuckles become prominent.
For many people with hammertoes, even a thin insole or orthotic can raise the toes up to the point where the toes rub and become raw against the inside toe box of the shoe.
This pair of Superfeet full length insoles are only 1/8″ thick under the toes, but even this slight elevation is enough to cause pressure in an already crowded toe box.
The solution? Trim the insoles to just beyond the ball of the foot, or just below the toes. Shortening the insole topcover length will provide the arch support without cramping the toes.