Before buying a jumbo bag, one must insure that it is well lined so that it can serve to secure the items as much as possible. Jumbo Bag Liners can make a huge difference in protecting the products stored inside the bag. There are two kinds of liners which are widely used namely the Form-Fitted Liner and Tube Liner. The tube liner is a polyethylene liner which has contours or spouts. It is only a plain cylinder that is sewn, glued, or tabbed into the jumbo bag. On the other hand, the Form-fitted liners are more carefully built type of bag liners.