High-quality material: The height-increasing rubber insoles are made of highly elastic silicone with good elasticity. Ventilation holes at the bottom help keep feet cool, dry, and odor-free during physical activity, ensuring comfort. Unique design: These insoles are designed to be worn inside socks, offering a discreet height increase. With moderate thickness, they are easy to wear, reusable, and comfortable. Soft and shockproof: Made from soft silicone material that cushions the heel and provides effective shock absorption. Helps reduce foot pain. The perforated design enhances breathability for added comfort. Washable: These insoles can be hand washed and air dried. Reusable and resistant to deformation. Versatile: Heel lift insoles are compatible with most shoes, boots, and socks. Suitable for various occasions such as interviews, dates, parties, or everyday wear. Note: Actual color may vary slightly due to lighting effects. A 13 cm variation may occur due to manual measurement. Material: Polyester, SEBS Size: As shown Length: 2.5 cm, 3.5 cm Package: 1 pair of inner height-increasing insoles