The Due North Sure Comfort Halter Half Sole are ideal for those who want to add a little extra comfort to their shoes and make them more enjoyable to wear. Before applying the Due North Sure Comfort Halter Half Sole, clean footwear lining with a damp cloth. Allow lining to dry completely before application. To apply, remove cushion from paper backing and position in shoe where ball of foot rests. Press down firmly when properly positioned, its quick and easy to apply.