Magna-Tiles are flat plastic tiles with magnetic edges. The Clear Colors set of 100 pieces contains triangles and squares in different sizes and colours. The magnetic edges help children construct structures. Young children usually start by making figures in a flat plane. They will soon discover that they can also build in height and learn how to give their creations solidity. As a result, Magna-Tiles are not only fun to play with, but they also stimulate children's spatial awareness. Magna-Tiles are suitable for children from 3 years. The tiles are made of ABS plastic. This makes them unbreakable and easy to clean. Set contents: 4 large squares, 50 small squares, 20 equilateral triangles, 15 isosceles triangles and 11 right triangles.en.