Waterproof 3 Hoop 18k Gold Stud made with Titanium Steel Tarnish Resistant Jewellery Very comfortable to wearWater Proof / Sweat Proof / Hyper Allergenic / Use at Gym, swimming... yours to enjoyEnjoy the elegance of 18k Gold jewellery with the strength of medical grade 316L stainless steel.Waterproof ✅ | Tarnish resistant ✅ | Hypoallergenic✅