The built-in closing system is applied to a wet suit with latex or neoprene sleeves. It has a plastic tubular connection with two grooves (1) for inner and outer O-rings (2, 3) to seal the suit. A shrink sleeve (4) on the sleeve between the O-rings prevents the connection falling out. There may be a safety groove (5) into which the O-ring of the connection projects. In the case of a neoprene sleeve, the plastic tube may have two grooves for internal O-rings. The outer shrink sleeve creates the required pressure and helps to prevent the connection falling out.
