- Size: 36 • Specific insole for severe flat foot, full length without trimming. • Anatomical design with high arch elevation to support the flat foot bridge. • Metatarsal pad that exerts slight pressure to improve comfort. • Wrap-around heel contour for greater contact surface and better weight distribution. • Moderate tilt at the heel base to straighten and reduce fatigue. • 6º elevation at the big toe to add contact surface. • Rigid 3/4 reinforcement to enhance its effect and small soft pad to cushion impacts. • Breathable PU material, hypoallergenic, waterproof, and 100% recyclable.