**CONTACT US WITH RING SIZES AFTER YOUR PURCHASE!!** The Men's Ring is 8 mm Wide, and the Woman's Ring is 5 mm Wide. Both Rings are a Domed Style with a High Polish Finish. Cobalt is a newer metal that is scratch resistant, will not shatter or break, and it will always look new! Please Note That we Can't Process an Order Without Ring Sizes! Be Sure to Contact Us With Ring Sizes, Or Leave it in the Gift Message!!