This simple sack stands up while you pack it, then it folds and stows away! Three sizes included. The small size is a great lunch bag, the medium size is about the size of a grocery bag, and a 9" x 13" pan fits perfectly in the large size. Finished Sizes: Small 7-3/4" x 7-3/4" x 4-1/2"; Medium 12" X 12" X 7-1/2"; Large 14" x 13" 9-1/2".