Onyx Silicone Heel Cushion. Made of platinum cured silicone material. Pain relief & support. Can be placed in any type of shoe. Hand wash with any mild soap and air dry. Before fixing again in shoe put talcum powder. Do not store in shoes for prolonged duration to prevent odour. Store in a cool, dry place away from direct sunlight. Avoid contact with open wound. In case you have sensitive skin, consult your podiatrist/physician before use. Replace the product if it becomes hard after long use. Silicone Heel Cushion is an excellent shock absorber with supporting side walls. Redistributes pressure evenly over foot surface.