The silicone insole pad is made of medical grade silicone material. The silicone will maintain soft, pliable and can provide long-lasting support for the foot. It is skin-friendly and odor free. It can absorb shcok during walking and running, and reduce the impact on the knee, joints, and back. It helps relieve pain and irritation from indications of metatarsalgia, fat pad atrophy, plantar fascia, and arthirtis. The blue insert is softer and can provide additional cushion to relieve pain and pressure. The insole pad is easy to wash and suitable for most footwear.