Material : WoodRubber band along with beads ， easy to useApproximate 400 Pieces per box ， not always the same quantity and Bead's color and shape are delivered in RandomPacked in PP Transparent 15 case devided Organization Box ， Box Size: 17.6*10.1*2.4cm， Divided case size : 3.5*3.3*2.1cmNot suitable for child under 3 years ，For use under adult's supervision