Chain of numbers 100 space: 100 plastic balls (diameter 10 mm) on a stretchable string (length 150 cm); when pulling the string the light arrest is released; balls two-coloured in steps of 10. playfully promote numerical comprehension and facilitate access to the number range up to 100 as well as abstract mental arithmetic packed in polybag made of RE-Plastic: sustainable and 100% recycled, complies with toy standard DIN EN71-3 Made in Germany