Children's Learning Building Brainflakes Discs that click together and pull apart easily for all ages and levels of motor skills! Not only for brain building, Brain Flakes® discs will improve the coordination and dexterity of young children, keeping both their minds and bodies active! discs are versatile and play a big part in STEM education! Ages: 5+ (under adults’ supervision, some children as young as 3 have no problem!) Brain Flakes® Discs Size: Discs measure 1.3 Inches (3.3cm) across | 1/10 inch thick in a variety of colors. Material: Brain Flakes® discs are made from durable and safe polyethylene (PE) | The clear reusable jar is made from PET with our signature yellow cap made from polypropylene (PP) Safety: Child safe | BPA, lead, heavy metal, and phthalate free! Education and Learning Approved: Great off-screen time activity! | A great solo or collaborative group activity for school classrooms, Makerspaces, Montessori, STEM education, daycares, libraries, or home! All Discs are in Excellent Condition.