PP-NEST Wooden 3D Connect Four Chess Spatial Thinking Games SZQ-01 Material: wood. Help to color memory. Size :75*100*100mm (H*W*L). Good to improve children, friend, Lovers relationship. Two parties, connect 4 points with one colors in a line to win, no matter horizontal, vertical or diagonal. Suitable for child brain thinking and spatial imagination, also it is a leisure game for adults.