1. Practical Function: This carbon fiber insole helps reduce foot pressure during exercise and provides extra comfort and support, which can effectively improve foot fatigue in marathons, long-distance running, and sports. 2. High-Quality Materials: The use of high-quality carbon fiber material, with super wear resistance, stretch resistance, and impact resistance, makes the insole more durable. 3. Wide Application: This insole design is suitable for sneakers, casual shoes, and sports shoes, whether men or women, it can meet their needs on various occasions. 4. Breathability: The insole is designed with breathable materials, which can provide good air circulation during exercise, reduce foot sweat and odor, and provide a more refreshing experience of wearing shoes. 5. Orthopedic Function: The insole's design has a certain orthopedic effect, which helps correct gait and prevent foot problems such as flat feet and high arches. Description: Material: Carbon Fiber Color: As the picture shows Size: As the picture shows (1 inch = 2.54 cm) Package includes: 1 pair of insoles Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2. Please allow 1 cm/0.39 \"-2 cm/0.79 \" measuring deviation due to manual measurement.