These HiFEN offering 5 pcs premium belly button bars are crafted from high-quality, hypoallergenic stainless steel, offering durability, tarnish resistance, and comfort for sensitive skin. The smooth, polished finish adds elegance and reduces irritation. With a standard 14-gauge thickness (1.6mm) and 10mm length, they fit most piercings. Nickel-free and safe for daily wear, even in newly healed piercings, they're easy to clean and maintain, providing a hygienic, low-maintenance option for everyday use.