This product is made of kraft paper. The inner layer of the bag is coated with a film, which has the effect of water and oil prevention. The bag can be reused. The bottom is glued and bears about 8 pounds. The creases on the bag can make it easier for you to fold. The height of the bag can be changed by folding. You can use it in the refrigerator to isolate different foods. You can put it in the drawer for keys, glasses, chargers, pens, etc. You can also put it in the garage to store pliers, screwdrivers, etc.