Four Exclusive, Attractive And long-lasting Memory Games. Each Set (Green,Yellow,Red,Blue) has Endless Possibilities To Master Visual, Motor And Memory Skills. Each Set Includes 5 Two-Sided unbreakable plastic boards (28 x 28 c"m, 1.3 m"m thick ), Slide Into a Solid wooden container (30 x 30 x 3 c"m) with 16 Windows Covered By 16 Knobbed Discs. Children in turn Lft 2 Discs In an attempt to find matching pair.