Size:
S: 18 mm
M: 28 mm
L: 33 mm
Available in gold 
 
Material chain: Surgical Steel, 18k gold plated, special sealing, no-discoloration, waterproof & hypoallergenic.
 
Jewelry care: Do not wear the jewelry in bath, in the sea or a swimming pool (chlorine can affect the jewelry). Avoid contact with cleaning agents, perfume, lotions etc.