1) Design: can accept customize .
2) material; paper card,cardboard. 1mm-2 mm thickness .
3) Price: substantial and reasonable
4) Usage: developing childrens' thinking skills ,funny
5)packing following the customer's idea
6)advantage:protect the environmet and don't hurt the child Remarks:Shapes , pieces , sizes and designs are available for different customers' requests OEM orders are welcome.