Get naughty on your date with the Adult supervision required warning sign belly ring! The barbell made of 14 gauge 7/16 surgical grade stainless steel, which is 100% safe for you to wear, and finished off with a smooth 5 mm ball. The road sign acrylic. The warning sign is etched in a cheerful crimson color that shows up like a smartly done tattoo on your belly against the colorless backdrop of the acrylic.