Size is as-packaged, or the diameter of loose marbles. ("D" is the diameter of round items other than marbles.)
THis is a primo assortment of marbles at a very small increase in price - approximately 40 glass marbles in assorted sizes, styles and colors! This bag contains anything from peewees to shooters, in all manner of styles and finishes, iridescent, frosted, etc. Don't forget something to keep the marbles in!