Hix is a versatile new construction toy consisting of four convertible cones made of elastic silicone rubber. Each cone transforms into four basic shapes which can be stacked and nested in a myriad of different configurations. Hix is a delight to fidget with and makes geometry accessible and fun for all ages. It playfully trains visual-spacial ability, hand-eye coordination, and fine motor skills. Finally, you have smart building blocks that don’t hurt when you accidentally step on them nor make any noise when tumbling down.Material: Food grade silicone rubberBPA-free, phthalate-free, latex-freeAges 2 and up.