ONYXNEO Comfort Silicone Insole relieves heel pains, absorbs shock while walking or running, redistributes pressure on foot and corrects alignment. Made from 100% Pure Platinum cured silicone that resists bacterial growth and does not dry out (harden). Hypoallergenic material with a slim design that fits any shoe, the insole is non toxic, washable and odorless. Available in three sizes to fit your shoe for better comfort. These insoles are suitable for everyday wear, low impact sports and work. Box Contains 1 pair Directions of use: Insert silicone insole in shoe after resizing it (use existing insole for resizing). Can be used with or without existing insole depending on your comfort. In case if you feel the insole is sticking to your feet you can use talcum powder on the insole. Washing Instructions: Wash using mild soap and air dry after washing.