What is measured from the back of the heel to the ball of the foot?

The measurement taken from the back of the heel to the ball of the foot is known as arch length. This measurement is particularly important in shoe fitting and design, as it helps to establish the proper fit and support for the foot's natural structure. Arch length can be vital for determining the appropriate size and style of footwear, ensuring that shoes provide comfort and proper alignment during movement.

Other choices pertain to different measurements: foot length measures the entire length of the foot from the heel to the toe, inseam refers to the measurement along the inner leg from the groin to the ankle, and shoe size is a general classification that can encompass various measurements including foot length and width but does not specifically define the arch length itself. Understanding these distinctions is important for those involved in footwear design and fitting, as each measurement has its unique implications.