A collapsible insulated container, comprising: a base wall comprising at least an inner layer (20, 23) and an outer layer (18, 21) with an interior space between the layers, wherein at least one gel pack is located within the interior space of the base wall; a peripheral wall extending from the base wall to define a cavity having an open end, the peripheral wall comprising at least a front wall, a rear wall, and a pair of opposite side walls, wherein the front wall and rear wall comprise an inner layer (20, 23) and an outer layer (18, 21) with an interior space between the layers; and, at least one foldable transverse crease line, oriented substantially horizontally, when the container is in an upright, open condition, across the front wall and the rear wall dividing each of front wall and the rear wall into at least two elongate pockets within the interior space with the at least one foldable transverse crease line between adjacent pockets; wherein the side walls contain no gel packs and have fold lines (28, 30) for enabling the container to be folded substantially flat with the front wall adjacent the rear wall; wherein each of at least two elongate pockets in both the front wall and the rear wall contain a single elongate substantially flat gel pack that contains a gel material and extends substantially horizontally when the container is in the upright, open condition; wherein the container is foldable into a folded storage configuration by folding the pair of side walls inwardly about the fold lines (28, 30) and folding the base wall to position at least a portion of the inner layer of the front wall adjacent at least a portion of the inner layer of the rear wall and position at least a portion of the inner layer of the base wall against at least a portion of the inner layer of the front wall and folding at least a portion of the front wall and at least a portion of the rear wall about the at least one foldable transverse crease line to collapse the insulated container. a base wall comprising at least an inner layer (20, 23) and an outer layer (18, 21) with an interior space between the layers, wherein at least one gel pack is located within the interior space of the base wall; a peripheral wall extending from the base wall to define a cavity having an open end, the peripheral wall comprising at least a front wall, a rear wall, and a pair of opposite side walls, wherein the front wall and rear wall comprise an inner layer (20, 23) and an outer layer (18, 21) with an interior space between the layers; and, at least one foldable transverse crease line, oriented substantially horizontally, when the container is in an upright, open condition, across the front wall and the rear wall dividing each of front wall and the rear wall into at least two elongate pockets within the interior space with the at least one foldable transverse crease line between adjacent pockets; wherein the side walls contain no gel packs and have fold lines (28, 30) for enabling the container to be folded substantially flat with the front wall adjacent the rear wall; wherein each of at least two elongate pockets in both the front wall and the rear wall contain a single elongate substantially flat gel pack that contains a gel material and extends substantially horizontally when the container is in the upright, open condition; wherein the container is foldable into a folded storage configuration by folding the pair of side walls inwardly about the fold lines (28, 30) and folding the base wall to position at least a portion of the inner layer of the front wall adjacent at least a portion of the inner layer of the rear wall and position at least a portion of the inner layer of the base wall against at least a portion of the inner layer of the front wall and folding at least a portion of the front wall and at least a portion of the rear wall about the at least one foldable transverse crease line to collapse the insulated container.