Specially contoured Visco-GEL pad lifts toes to take pressure off bent-under toe tips. Gentle support makes shoes comfortable and walking easier. Soft, extra-wide gel loop protects and soothes toe-top corns. Washable, reusable, effective for weeks. Small has 12.5 mm diameter, Medium has 15 mm diameter & Large has 20 mm diameter. 2 per pack.