- Size: 39 • High-density memory foam insoles that mold to the shape of the foot, providing optimal cushioning and reducing heel impact. • Breathable and soft design that allows air circulation, effectively absorbing sweat and keeping feet dry. • Super lightweight and washable, ideal as replacement insoles to make your shoes more comfortable. • Suitable for daily use in hiking, casual, work, dress shoes, and boots, offering control, support, and comfort. • Perfect for people who spend a lot of time on their feet, runners, travelers, hikers, office workers, nurses, and athletes.