Materials: - Acrylic - Nickel Free Metal Each earring is accompanied by its own earring card and rubber backings, allowing for a polished presentation in both your physical storefront and online shipments. We devote great care to crafting every piece, ensuring a high level of attention to detail. Our use of nickel-free metal ensures that each piece is hypoallergenic. While our earrings are designed to be durable, we suggest handling them with care, as they are works of wearable art.