Features 1. We have upgraded the bottom hollow-out design, which is more breathable, comfortable and not easily deformed 2. High quality silicone material: durable and comfortable, with super elasticity, more soft, comfortable, breathable and no smell. 3. Wide application: suitable for high-heeled shoes, leather shoes, flat shoes, high-heeled shoes, boots and other shoes. One size fits most adults, male and female. 4. Comfort: Concealed heightening sole provides excellent cushioning, enhances stability and minimizes daily fatigue and discomfort. 5. Made of durable silicone which makes this product washable and reusable time after time with no deformation Specification Color: White Material: Silicone Size: 2cm, 3cm, 4cm (Optional) Package Includes: 2 x Heightening Insole