The Memory Insole is designed to deliver personalized comfort. Custom memory foam instantly forms to your foot for cushioning and a personalized fit. It also features a performance moisture absorbing fabric engineered to keep your foot dry and antimicrobial protection for odor control. Its slim design is perfect for work shoes and boots casual shoes and sneakers. Includes 1 pair of insoles. 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.