KUTOI Pyramid Stacking Toy Building Blocks 3D Puzzle Brain Teasers for Kids and Adults-Creative Preschool Learning Activ

TONS OF FUN | As an introduction to the 3D world of geometric shapes, this kids 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.Re-create designs from the booklet, or build your own!Note: Some designs require more than one set. We strongly recommend you to buy two or three sets to have more combinations!Best christmas gift sets for kids