This is a great open ended toy to keep kids engaged for hours ,it can be played in many ways , can do color sorting , color recognition , building , stacking , domino game , Stacking and knock out game , can use timer to increase kids concentration which is an added fun.To let children play Domino can keep them away from mobile phones.It is a good useful toy for kids to exercise intelligence, have parent-child interaction and cultivate patience. Specifications: Quantity:100 piecesMaterial: high quality pineColor: 10 colorsPaint surface: water-based paintAge: 24M+Product single size: 4.3*2*0.7CMNotes: 1.Please allow 1-3cm differs due to manual measurement.2.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Package Contents: 100 X Domino Toys