Convenient one-step application. 4 Medicated cushions. Salicylic acid. All-in-one design removes calluses while providing pain relief and immediate cushioning. Medicated disk; Pain relief cushion. Patented formulation. Cushions as it heals. Pain relieving cushion and remover in one make it easy to apply. Clinically proven safely removes calluses. Contains natural rubber latex. Made in USA.