K’Nex keeps finding ways to successfully expand their product line with new pieces that add to the uniquely creative building concept that is K’Nex. Flex K’Nex features new flexible sections that allow the builder to build parts of the model individually on one of the most ingeniously foolproof instruction manuals you have ever seen. Then when all the pieces are in place, you bend and connect them together to create your masterpiece. There are several models to build and we’re not sure which part is more fun, starting, finishing, or taking one creation apart so that you can start making another.