Posts are made from surgical steel so they are very hypo-allergenic for sensitive ears
Earrings are 100% nickel-free and cadmium-free
This jewelry is considered waterproof and tarnish-resistant! They use IP Plating which stands for Ion plating. This is a Physical vapor deposition (PVD) process and the jewelry is plated with at least 0.1 micron of 18K Gold or Silver, plus e-coating which qualifies it to pass waterproof tests.