Plywood go board.
Small: 9x9 playing area with blank reverse
Medium: 13x13 playing area on the front with 9x9 playing area on the back. 12.25 x 11.375"
Large: 19x19 playing area on the front with 13x13 playing area on the back. 18 x 16.5"
(Go stones not included)
Please be aware that the medium boards now have laser etched lines with a slightly thinner look and are not drawn on, so they are much more durable.