18k gold classic wedding band, 6mm flat shape comfort fit, approximate thickness is 1.55 mm. This simple design is classic and timeless. The low-maintenance feature makes it great for everyday wear.  This classic wedding band enjoys free cleaning and free sizing lifetime. Make it extra special with your own handwritten messages and drawings, which can be scanned and emailed to us for laser engraving. An extra charge may apply for engraving, $65 per location for precious metals.