Abstract: A vacuum-sealed container includes a flexible waterproof plastic bag on which there are a plurality of inflatable C-shaped tubular ribs and a plurality of horizontal tubular inflatable ribs, the horizontal tubular ribs being connected internally and externally to the C-shaped tubular ribs, and on one of the C-shaped tubular ribs there is a nozzle through which air can be forced into the C-shaped tubular ribs and tubular horizontal ribs to form a three-dimensional container, thereby providing a space for storing articles, the bag having an open end for putting articles therein, whereby the vacuum-sealed container can be inflated and kept on a flat surface to form a three-dimensional container thereby making it easier to put articles inside the bag and enabling it to become flat and foldable when not in use, and therefore isolating the articles from water, moisture and mildew.