Best Wing Jewelry .925 Sterling Silver"Cat" Stud Earrings for Children and Teens Quantity: 1 Pair Material: 925 Sterling Silver, Hypoallergenic (Nickel and Lead Free) Silver Weight: Approximately 1.00 g Part Size: 7 mm x 8 mm Comes With Gift Box (US Seller Fast Shipping and Easy Return)... To Prevent Infection: Clean both of your ears and all earrings with alcohol Before and After wearing them. DO NOT put Hydrogen Peroxide (or any Bleach) on any Silver jewelry....You Should Clean Your Earrings as Often as is Possible. To Remain Safe and Sound, Clean Your Earrings Once a Week Especially If You Wear the Same Pair All Week. Be Careful to Not Push the Back Post On Too Tight.