Features: 1. Increase the Height of Insoles: Wearing invisible height-increasing socks under regular socks can quickly increase your height by 3/3.5/4cm, and enhance confidence, without allowing anyone to discover your secrets. 2. Foot Protection: The best heel lift socks. It can cover calluses and cracked heels, and help to improve the bone spurs at the arch of the foot and the inflamed tissues of the plantar fascia. Absorb vibration, prevent extra pressure on the foot, improve foot balance and foot strength. 3. Breathable: Designed with small holes for ventilation to reduce discomfort. You will feel comfortable when paired with socks, shoes, sneakers and boots. 4. Easy to Clean: Our products are easy to clean, wash with soap and water, and can be dried quickly to make your feet soft and healthy. 5. Comfortable Foot Pad: Made of soft and elastic silicone, our sock lifter cushions the heel, fits tightly without moving or slipping, and is consistent with the natural shape of the foot. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material: silicone Size: free size Color/Style: As the picture shown Height: 3/3.5/4cm Package List: 1 pair of Height Increase Insoles Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.