Sanita Women's Wixen Boot Leather and synthetic Synthetic sole Shaft measures approximately 9" from arch The polyurethane rocker bottom construction is reinforced with a hard plastic frame to provide stability and durability^The original design is approved by the APMA for its standards in arch support and orthopedic construction^Anatomically shaped footbed engineered for arch support and roomy toe box, allows for normal blood circulation and cradles the foot^The heel-to-toe motion porvides a natural gait while in motion^Danish designed with over 100 years of handcraftsmanship that support the technology and structure of today