Yellow Mountain Imports Go Game Set with 9x9 Playing Field Go Board and Single Convex Stones Quality board; this set includes a beechwood veneer table board that is less than half an inch thick making it light and easy to transport; board dimensions are 9.8 x 9.3 x 0.4 inches (25 x 23.5 x 1 centimeters) 9x9 playing field; the perfect playing field for fast and instructive games; the booklet, "The Way to Go", by Karl Baker, which explains the rules and strategies of the game is included in this set Felt bottom surface; the bottom is covered in felt which gives the perfect amount of grip while retaining a traditional feel Melamine stones; 181 black and 180 white melamine stones; 21.5-22 millimeters (Size 3) single convex stones measure 5.6mm tall and 22mm wide (approximately 0.22" x 0.87"). Black and white stones are stored in their individual bowls which are included in the set 30 day return policy; here, at Yellow Mountain Imports, we want you to be satisfied with your purchase; you are backed by our 30 day no questions asked money back guarantee so you can buy with confidence Board: 9.8 x 9.3 x 0.4 inches (25 x 23.5 x 1 centimeters) Stone: 0.22 x 0.87&#034; inches (0.56 x 2.2 centimeters)