Insulated container and method of assembling an insulated container

A method of assembling an insulated container comprising the steps of:

• providing an external housing having a base and sidewall structure extending upwardly from the base to a first height, wherein an upper end of the sidewall structure defines an opening of the external housing, and wherein the sidewall structure is provided with at least one slit at a second height that is less than the first height;
• providing an insert having an insert base and an insert sidewall structure extending from the insert base, the insert sidewall structure having a third height that is less than the second height;
• folding the insert sidewall structure with respect to the base so that the shape of the insert corresponds to the shape of the external housing;
• pressing the insert through the opening of the external housing so that the insert sidewall structure is snugly received in external housing, wherein when the insert is received in the external housing the insert sidewall structure defines a shoulder portion;
• positioning a thermally insulated lid through the opening of the external housing, the lid having an upper surface and a lower surface, wherein edge parts of the lower surface of the lid portion rest on the shoulder portion defined by the insert sidewall structure and the upper surface is positioned below the at least one slit when the lid is in place;
• and
• moving a portion of the sidewall structure above the slit to an inverted position to engage the upper surface of the lid and to hold the lid in position.