PediFix Visco-GEL Thong Sandal Guards with Ball-of-Foot Cushion includes soft gel that surrounds the sandal ‘thong’ or ‘post’ to reduce friction, prevent blisters and irritation between toes. Extended Gel pad protects ball-of-foot, absorbs shock and adds cushioning to thin-soled shoes. PediFix Visco-GEL Thong Sandal Guards with Ball-of-Foot Cushion are washable and reusable.