Yellow Mountain Imports Magnetic Go Game Set with Single Convex Magnetic Plastic Stones and Go Board, 11.3 x 11.2 Inches Solid construction: made with a smooth surface, durable hinge and thick, high quality plastic; the board unfolds to be completely flat with individual bowls that perfectly fit inside the board after you have finished playing Magnetic: the stones stay in place on the board so youll avoid the pain of having to find missing stones; the magnets are strong enough to keep the stones on the board without compromising the ability to move them around with ease Travel ready: lightweight and easy to carry so you can take your go board with you on the road; so portable you can slip it into a backpack and take it out to play in any car, train or plane making your trip much more enjoyable Complete set: board measures 11.3 x 11.2 x 0.7 inches (28.7 x 28.5 x 1.7 centimeters) and contains a 19 x 19 playing field; 181 black and 180 white magnetic plastic single convex stones apporoximately measuring 5 millimetes tall and 12 millimeters wide (0.2 x 0.47 inches); also includes two plastic bowls (gosu) that measure 4.6 x 0.9 inches (11.6 x 2.3 centimeters) 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 When Flat: 11.3 x 11.2 x 0.7 inches (28.7 x 28.5 x 1.7 centimeters) Stone: 0.2 x 0.47 (5 x 12 millimeters) (approximately ) Bowl: 4.6 x 0.9 inches (11.6 x 2.3 centimeters)