Fold the flexible door stop in half to make a U shape. Pinch the ends together to fit under any door.
Place the folded door stop with thte beveled ends under the door until the proper amount of pressure is acheived. If the door has a strong pull or is affected by additional elements you can roll the end of the flexible door stop for more stopping power.
Once the Flex Stopper door stop is securely in place you will stop the door from closing. The Flex Stopper holds open any self closing door that meets ADA requirments in its folded state and even more stopping power when rolled on one end.