The zipper bag holds all parts of the Playard – the frame, mattress and leg extensions. Unfasten the mattress from around the frame and set it aside. Turn the frame upside down and push a leg extension onto the bottom of each leg until it snaps firmly into place. Pull on each leg extension to make sure you’ve attached it securely. Turn the Playard over and grasp the rails. As you hold the rails, keep the handle in the floor of the Playard raised with the feet hanging below, almost touching each other. Keep the bottom rails folded and pointed upward while you lock the top rails. Push the center of the frame floor down until it locks into place. As you push the floor down, the top rails should lock tightly. Press each top rail down to make sure you’ve locked them. Place the mattress onto the frame floor with the padding facing up. Insert the six straps on the underside of the mattress through slots on the bottom sides of the Playard and fasten the straps under the Playard to secure the mattress.