SuperiorArch SUPERIOR ARCH Foot Stretcher for Ballet and Gymnastics This Foot Arch Stretcher is custom designed with an incline molded into the select wood base for under arch support. This feature, exclusive to SuperiorArch, allows room for the heel to rotate down avoiding impingement of the heel bones. Each SuperiorArch is completely covered with two inch Premium Foam for foot comfort. Velcro adjustable overlapping Flap will properly secure any size foot. Instructional Videos are available.