Color: Black Material: Polyurethane Units: 1 unit Size: Small, Height: 3.5cm Item Dimensions (L x W x H): 10 x 7 x 3 centimeters Insole Type: Comfortable Insole About this item Invisible Three Heights: These half-insoles are designed to be invisible. No one will know the secret to your height increase. The three optional heights are perfect for various occasions such as meetings, dates, weddings, shopping, or any other event where a camera is hidden. Double Layer Structure: The high-density PU insoles with a high-elasticity GEL layer and honeycomb design are engineered to fully absorb shock and reduce foot stress with every step. Lighter and more durable, they provide ample support for your heel. All-day comfort: The odor-free mesh fabric wicks away moisture effectively, keeping your feet fresh and dry all day. The sticky honeycomb base prevents the insoles from slipping inside your shoes. The U-shaped heel cup helps maintain stability and naturally positions your heel for added comfort. Sports, Work, Leisure: These heel wedge insoles are perfect for improving performance and reducing fatigue in daily life. Good cushioning can reduce impact on joints and muscles, relieving pain caused by leg length discrepancies, heel spurs, and Achilles tendonitis.