Loveboat 1 Piece Surgical Stainless Steel Belly Button Ring Double Gem Navel Ring Umbilical Ring, Hypoallergenic and Anti-Fading (Pink) Material: 316l Surgical Stainless Steel, Hypoallergenic Lead and Nickel Free, High Quality Double Swarovski Crystals Bar diameter: 5mm Top Ball / 8mm Bottom Ball; Length: 10 mm Don't inflammation, not allergic. A wide choice of colors to fully show your special taste. 100% Brand New and High Quality.