The upside down open hoop earrings are made of REAL 925 STERLING SILVER, Nickel Free and Hypoallergenic. The pull through hoop earrings don't cause any allergic reaction, suit anyone including people who have sensitive skins.You could wear the open hoop threader earrings in the daily life, daily work, festivals and any special moments including the Mother’s Day, Valentine’s Day, Christmas and Birthday, etc. You’ll become the focus of the crowd and get tons of compliments from others when you wear the upside down hoop earrings.