Formthotics 3D Heel RaisersFormthotics 3D Heel Raisers Alter biomechanics and function in the sagittal plane at the rearfoot. Features: May be attached under the heel area of Formthotics to elevate the calcaneus 3D Cup around the heel Provides approximately an 8 mm raise Helps alleviate Achilles tendon and triceps surae strain Assists in balancing leg length discrepancy Helps improve function in a forefoot equinus Self adhesive Comes in Pack of 3 Pairs Sizing Click to enlarge.