Alters the biomechanics and function in the sagittal plane at the rearfoot. Available in S, M, L. May be attached under the heel area of Formthoticsâ„¢ to elevate the calcaneous. Has a 3D cup around the heel, and provides approximately 8mm of raise. Helps alleviate the achilles tendon. Assists in balancing leg length discrepancy. Helps improve function in a forefoot equinus. Self-adhesive.