1NUMBER & SIZE - The travel go game set contains 150 black and 150 white magnetic convex stones which are separately contained in 2 individual bowls. The board measures 13 x 13 x 0.7 inches with 19 x 19 playing field thats easy to store and play. 2MAGNETIC STONES - No more missing stones! All plastic stones are crafted with magnetic design to ensure the stones stay firmly in place while playing games on the go. 3DURABLE MATERIAL - The magnetic go game set is made of premium plastics which is durable, smooth and built to last. The hinges are sturdy and the board lays flat after unfolding. 4TRAVEL PORTABLE - The lightweight travel board can be folded up to save space for storage. Put stone bowls under the board (perfectly fit) after finishing game, slip the board into your backpack and take it along with you, perfect for travelling, road trip or business trip.