A food containment system comprising: a Gastronorm pan; and a food pan cover comprising: a first end; a second end; a first side panel comprising a first top edge and a first bottom edge; a second side panel comprising a second top edge and a second bottom edge; a gusset formed between the first side panel and the second side panel, the gusset comprising: a third bottom edge; a first gusset panel delineated by the first end, the second end, the first top edge, and the third bottom edge, wherein a width of the first gusset panel is greater than a width of the first side panel; and a second gusset panel delineated by the first end, the second end, the second top edge, and the third bottom edge, wherein a width of the second gusset panel is greater than a width of the second side panel; a first side seal extending along a portion of the first end, sealing together a portion of each of the first side panel, the second side panel, the first gusset panel, and the second gusset panel; and a second side seal extending along a portion of the second end, sealing together a portion of each of the first side panel, the second side panel, the first gusset panel, and the second gusset panel; wherein the food pan cover is formed from a heat-shrinkable material. a Gastronorm pan; and a food pan cover comprising: a first end; a second end; a first side panel comprising a first top edge and a first bottom edge; a second side panel comprising a second top edge and a second bottom edge; a gusset formed between the first side panel and the second side panel, the gusset comprising: a third bottom edge; a first gusset panel delineated by the first end, the second end, the first top edge, and the third bottom edge, wherein a width of the first gusset panel is greater than a width of the first side panel; and a second gusset panel delineated by the first end, the second end, the second top edge, and the third bottom edge, wherein a width of the second gusset panel is greater than a width of the second side panel; a first side seal extending along a portion of the first end, sealing together a portion of each of the first side panel, the second side panel, the first gusset panel, and the second gusset panel; and a second side seal extending along a portion of the second end, sealing together a portion of each of the first side panel, the second side panel, the first gusset panel, and the second gusset panel; wherein the food pan cover is formed from a heat-shrinkable material. a first end; a second end; a first side panel comprising a first top edge and a first bottom edge; a second side panel comprising a second top edge and a second bottom edge; a gusset formed between the first side panel and the second side panel, the gusset comprising: a third bottom edge; a first gusset panel delineated by the first end, the second end, the first top edge, and the third bottom edge, wherein a width of the first gusset panel is greater than a width of the first side panel; and a second gusset panel delineated by the first end, the second end, the second top edge, and the third bottom edge, wherein a width of the second gusset panel is greater than a width of the second side panel; a third bottom edge; a first gusset panel delineated by the first end, the second end, the first top edge, and the third bottom edge, wherein a width of the first gusset panel is greater than a width of the first side panel; and a second gusset panel delineated by the first end, the second end, the second top edge, and the third bottom edge, wherein a width of the second gusset panel is greater than a width of the second side panel; a first side seal extending along a portion of the first end, sealing together a portion of each of the first side panel, the second side panel, the first gusset panel, and the second gusset panel; and a second side seal extending along a portion of the second end, sealing together a portion of each of the first side panel, the second side panel, the first gusset panel, and the second gusset panel; wherein the food pan cover is formed from a heat-shrinkable material.