Heel grips are a great option to help make your barefoot shoes work for you if you have narrow heels or are experiencing slippage with your shoes. Make your shoes work for you with simple fit hacks like these soft rubber foam heel grips. Comes in a pack of 2 *Once applied the adhesive can leave a residue on the shoe if you later remove the heel grip. So we recommend not adhering them until you are certain of your preferred location.