If you don’t have a bag clip, you have a few options when it comes to keeping your chips fresh. The easiest way to do this is to fold the top of the bag over itself multiple times after forcing the excess air out. If you do this, store your chips with the folds facing down and place a heavy object over the folds to keep the bag sealed. Another option is to fold the corners towards the middle of the bag before folding a few layers on top of the corners. Then, stick your thumbs in the corner folds and turn them over the top of the bag to create an airtight seal.