A generic spatially-scalable shape encoding apparatus and method for handling different mask decomposition methods, while maximizing coding efficiency of the encoder, is disclosed. A garment mounted dual zipper cover releases a bladder that creates a reliable mandibular shelf and bracket while simultaneously encapsulating the crico-thyroid cartilage protecting it from compression. The upper portion has a knee cap for covering a knee joint of the player. Also, thering width w of the outer withstand voltage portions and the intermediate withstand voltage portion as well as the width y of the narrow groove withstand voltage portions are the same. These enzyme substrates can be bound to medically acceptable polymers or fibers.