Fold the flap of fabric over one end of the bag so it covers the opening, and then tuck the end of the flap into the small pocket on the opposite side of the opening. Now roll the end of the bag* in the direction of the pocket. Connect the buckle together by bringing the two ends in front of the bag, creating a loop. The buckle should now be clasped on the top side of the bag.
*Must be rolled at least 3 times.