Product introduction “Marker maker” to make your own markers is a set that you can enjoy as an experimental tool as you can experience using the measuring cylinder and tweezers to assemble parts of markers. It is recommended as a problem of summer’s free research that kits that can predict myself how colors change by blending three primary colors and actually produce markers. Crayola with parts for 16 markers is born in the United States and has a history of more than 120 years. It is a safe and harmless painting material certified to ACMI [Art & Creative Materials Institute]. Same for my sixth consecutive year as “Mother’s most beloved brand” in the USA (From the smarty pants survey / 2009 – 2014) (From Amazon.co.jp) Safety warning If you accidentally swallow it There is a fear of suffocation.Please be especially careful in the environment where infants are nearby.