Abstract: A double walled liquefied gas container formed with an inner storage vessel and a spaced outer shell with insulation in between with a low heat conductive neck tube connecting the access opening of the inner vessel with the access opening through the outer shell with heat conductive ring members preassembled in conductive relation longitudinally spaced along the neck tube and disc members of larger dimension joined in contacting relation with the outer end portions of the ring members and in which the insulation includes layers of heat conductive material wrapped in contacting relation with the disc members and which includes means for connecting the neck tube to the access opening in the outer shell to permit relative angular and lengthwise movement between the inner vessel and outer shell and to limit relative rotational movement.