Ocean 4-Layer Adjustable Orthotic Insole (5.5cm Wide, 1 Pair Beige), Improved and Widened Sole, Gel Heel Pad Covering Half the Foot to Correct Leg Length Differences. Improved Heel Pad: The heel pad is made of high-quality silicone and fabric, durable and comfortable, suitable for leg length differences, heel pain, heel spurs, and tendonitis. Adjustable Design: You can adjust the height according to your needs by adding layers. These layers can be used individually or in combination. Each heel lift can relieve foot pain while increasing height (4 removable 0.6cm thick layers). Comfortable and Reusable: The high-quality rubber structure provides heel support. Flexible yet firm, easy to clean, and durable, so you can clean and reuse it multiple times. Supports walking, running, hiking, dancing, or other long-term activities. Suitable for Most Shoes: This heel lift insert is self-adhesive. Use them; they won't slip and provide heel support. They're ideal for high heels, formal shoes, boots, and other types of footwear.