The Curved Heel Cup is fully adjustable and limits movement of the foot.
The Foot Leveller keeps the foot in a near horizontal position for the whole rotation of the pedals, still allowing full movement.
The Knee Abductor helps to stop the knees from turning in.
The Freewheel Crank with lock pin allows you to disengage the pedals.
The support pedal heel plate is designed to stop the heel from turning in and hitting the cranks.