The Custom Orthotic Insole provides a personalized, supportive fit for full-foot comfort. It features memory foam, a composite plate, and antimicrobial technology. May be trimmed as needed for a true custom fit. To trim, simply remove the existing insole from your shoe, line it up with your new insole as a guide and trace with a ballpoint pen. Carefully cut with a sharp pair of scissors, then insert into your shoe with the top side up.