PediFix Podiatrists' Choice Ball-of-Foot Cushion protects forefoot, helps relieve and prevent pain and calluses. Absorbs shock and reduces friction. Soft, double-layer foam pad stays securely in place with a comfortable toe loop. Hand-sewn nylon cover for extra durability. Great for thin-soled footwear. PediFix Podiatrists' Choice Ball-of-Foot Cushion is Interchangeable for right or left foot.