- Size: 39 • High-density memory foam insoles that mold to the shape of the foot, providing optimal cushioning. • Breathable design that allows air circulation, keeping feet dry and comfortable all day long. • Ideal for hiking, casual, work, and dress shoes, offering support and comfort with every step. • Suitable for runners, travelers, hikers, office workers, nurses, and athletes, reducing pressure and fatigue on the feet. • Easy to wash with warm water and soap; it is recommended to replace them every month to maintain foot health.