A surgically implantable fluid adjustable device having an elongated flexible inflatable portion which is substantially evacuated of fluids. The device also has an elongated flexible and substantially inextensible band portion attached to the inflatable portion. The device further includes a catheter tube in fluid communication with the inflatable portion, the catheter tube having a distal end attached to the inflatable portion and an open proximal end extending therefrom. The device even further includes a removable plug inserted into the open proximal end of the catheter tube such that it substantially prevents introduction of air through the proximal end.