3D Pyramid Building Blocks Brain Teasers for Kids and Adults

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. Besides the rounded corner design could prevent children from getting hurt. DEVELOP SKILLS | Teach spatial thinking and explore three-dimensional construction learn about size and shape relationship develop children's fine motor development improve hand-eye coordination and dexterity keep both their minds and bodies active! Manufactured by AWESOME CHOICE. CONTENT | Each set includes 15 "square donuts" in five progressive block sizes that nest stack and wedge in both vertical and horizontal configurations. Note: Some designs in the booklet require more than one set. We strongly recommend you to buy two or three sets to have more combinations! Re-create designs from the design booklet or build your own creations NOW! TONS OF FUN | Perfect as a party favor as an introduction to the multi-dimensional world of geometric shapes or as a fast solution for lost parts. This fiftten piece set of building blocks use square rhombus style components that stack into four-sided pyramids and nest completely together as one large diamond. They're so much funs and will definitely entertain your child!