Heel Hole Shoe Hole Prevention Insert Prevents heel holes in shoes. Made for all types of shoes including running shoes, basketball shoes, athletic shoes, dress shoes, boots, etc. to prevent heel holes. Made from Ballistic Fabric used to make Body Armor. Soft & flexible. Shoe Armour was developed to eliminate the premature death of shoes due to holes. Shoes often wear from the inside out and holes can form from parts of the foot rubbing repeatedly on the inside of the shoe. Shoe Armours patent pending technology helps prevent these types of holes and helps shoes last longer. Shoe Armour works best when used on new shoes but can be used at anytime in your shoes life to prevent holes or protect them from getting worse.