Paper card stacking boxes designed with numbers and an equivalent number of illustrations on each box. Made in 100% responsibly sourced paper CE-tested after European standard EN-71-1 Suitable from +3 years old Cleaning instructions: Not washable, but can be wiped off with a wet cloth (max 30 degrees C). Do not use chemicals WARNINGS: The stacking boxes are approved for children at the age of +3 years old. Please keep packaging for future reference