flexible film 14 of soft plastic such as polyethylene vinyl or other similar plastics on the inner surface and an outer flexible film 15 of harder nylon polyester or similar harder plastic material or aluminum foil on the outer surface the flexible laminate films 12 enclose a plurality of pellets 16 of low conduction material such as expanded polystyrene foamed pellets or other shaped fillers the pellets 16 are used as structural members to maintain the spacing between the opposed flexible laminate films 12 the voids 17 between the pellets 16 and those within the foamed material are evacuated to provide a substantial vacuum in the insulation the flexible laminate films 12 and 13 are sealed by fusing the softer polyethylene inner surface using conventional heat at the edges so as to provide a margin 21 of sufficient width to accomodate conventional attaching means such as staples and the like the combination of the use of low conduction pellets or other foamed shapes within an evacuated volume surrounded by a flexible envelope provides the advantage of good heat insulation while maintaining a flexible easy to manage insulation ensemble the flexible laminate film 12 comprised of films 14 and 15 may be heat fused glued or sealed at the edges by any conventional means as can be appreciated from the description.