These adorable earrings on plastic posts are hypoallergenic and are the perfect accessory for sensitive ears. Each pair of earrings is 100% lead-free and metal-free (e.g. nickel, cadmium, brass, etc) and is very comfortable to wear for long periods of time without worry of infection or irritation. Since these earrings are not made with any metal, they can be safely worn in designated metal-free environments such as hospitals and factories.