Abstract: An insulated jacket for a support vessel includes a body formed from flexible insulated material, the body including a continuous wall member having an inner surface and an outer surface; an access opening rim forming an access opening, and a base opening rim forming a base opening wherein the access opening rim is displaced from the base opening rim by the continuous wall member; a cavity configured for a support vessel containment wherein a portion of the support vessel can project from the base opening; and a stop element formed on the body from at least a portion of the continuous wall member adjacent the base rim, the stop element being configured for projecting into the cavity for engagement with a base portion of a support vessel to substantially prevent a support vessel from moving from the cavity outwardly through the base opening.