0% NICKEL! These small crystal stud earrings were developed in consultation with skin specialists that guarantee comfort all day. A charming Crystal set in Skin Friendly Medical Plastic. The 4mm measurement is of the entire setting. 
 
Blomdahl earrings are sold by the pair with backs and come in a Clean Pack. In the transparent Clean Pack bubble, one pair of small crystal stud earrings are hygienically packed. The label is a seal which guarantees that you are the first person to wear your new earrings.
 
*Important: Do not clean medical plastic earrings with alcohol or peroxide. It can turn them yellow and brittle. Use a gentle soap and water for cleaning.