ZCtron Pyramid Stacking Toy Building Blocks 3D Puzzle Brain Teasers for Kids and Adults | Creative Educational Preschool Toys,Kids Toys for 3 Year Old Boys & Girls

TONS OF FUN | As an introduction to the 3D world of geometric shapes, this building blocks use square, rhombus that stack and nest to many shapes

So much fun will definitely entertain your child!CHILD SAFE | Made of ABS, a high quality environmental friendly plastic material

BPA, lead, heavy metal, and phthalate free

Non-toxic and safe for children to play with

DEVELOP SKILLS | Teach spatial thinking and explore 3D construction, learn about size and shape relationship, develop children's fine motor skills, improve hand-eye coordination and dexterity

CONTENT | Each set includes 15 "square donuts" in five progressive block sizes that nest, stack, and wedge in both vertical and horizontal configurations

We strongly recommend you to buy two or three sets to have more combinations!