KidMigoTinker Toys teach children to interpret instructions as they follow our helpful assembly guides. And because parts can be put together or broken down easily, they can continually build something new and try out new ideas all their own. Components are made of non-toxic, BPA-free PE plastic that withstands countless sessions of assembly and disassembly. They are easily cleaned with mild soap and water. With their convenient storage case, the KidMigo Erector Set for 4 5 6 7 8 9 10 11 12 years old boys and girls makes an impressive Christmas gift or birthday gift. Foster early learning and spatial skills in future inventors. Add the KidMigo STEM Building Toys to your cart today.