A real vocabulary builder, Kid Genius features 220 double-sided word magnets that stick both ways with a common word on one side and a brain-expanding synonym on the other, for example "laugh" flips to "guffaw" and "dog" flips to "canine." For ages 5 and up. This kit contains 220 magnetic word tiles. Word tile height is .375". Package size is 4.75w x 6h x 1.25"d. Shipping weight is .5 pounds.