These puffy heart earrings are made with 18 karat gold plated charms & huggie hoops. This gold plating protects against wear & tear, tarnishing, & light contact with substances such as water. Closures: Standard gold hoops are hypoallergenic & nickel free (18 karat gold plated). Clip on gold hoops are hypoallergenic & nickel free (18 karat gold plated). How to wear clip ons: Hold the earring in one hand while pulling the closure open with the other hand, place the earring onto the thin upper earlobe, then slide the earring down the earlobe to secure in place. Please feel free to message me for any questions! Clip On Earrings, Gold Heart Huggie Hypoallergenic, Nickel Free, Puffy Dangle Dainty Earring