The SeaCure X-Type Moldable Mouthpiece is a unique, moldable device designed to fit your mouth, teeth, and jaw configuration precisely to provide maximum retention and control of your regulator. SeaCure was created by an orthodontist, to fit your mouth, teeth and gums perfectly. SeaCure offers custom comfort and eliminates the jaw fatigue sometimes experienced with conventional mouthpieces. It is the only moldable and re-moldable mouthpiece offset for both the upper and lower jaw positions. Mouthpiece comes with a convenient holder with chain. Oh Yea! Don't forget the tie wraps to attach it with! See: SKU AQUTW10 Tie Wrap.