• 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