WildKlass Jewelry BioFlex Pregnancy Navel Ring with Gemmed Alphabet Dangle Crafted especially for a pregnant tummy our BioFlex Barbells are comfortable and flexible, they can be customized and adjusted as needed so that you can wear it throughout your entire term. BioFlex is also fully autoclavable. The charm is 316L Surgical Steel and polished to a mirror finish and accentuated with fun CZ gems for a touch of glam. Lightweight and comfortable to wear. Material : 316L Stainless Steel Thickness: 14g, Length: 51mm, Ball Size: 5mm Exceptionally High Quality Jewelry!