Pull off one of your Klip Bags from the roll of 12, open out and place in the wheelie bin as normal. Overlap the open end around the rim of the bin. These heavy duty bags are designed to be used with other Wheelie Klips products. Having purchased your Klip 'n' Bag or Klip 'n' Fresh you will then need to push each of the Klips over the perimeter of the bin, one each side at 90 degrees to the hinge of the lid, trapping and securing the Klip Bag in place. For further details see instructions on either your Klip 'n' Bag or Klip 'n' Fresh packaging.