Plated Stainless Steel ball posts Hypoallergenic Nickel and lead free Care instructions: Though polymer clay is a durable material, you still want to handle your beautiful pieces with care. To clean them, use a small damp cloth to gently wipe them clean or a small amount of rubbing alcohol to remove any dirt. Make sure they are stored away from any wet areas and do not wear them in water. *Please note that each item in our shop is handmade, therefore items may may have a few imperfections and vary in pattern, sizes, and colors