The Cuisenaire learning set include 222 unit rods in 10 different sizes, supplied in a box. The smallest one is 1 cm, the tallest one is 10 cm. The set includes: 12 each of the rod from 10cm size to 5 cm size, 18 rods of 4 cm size, 30 rods of 3 cm, 36 rods of 2 cm, and 66 cubes of 1 cm. The set comes with 6 activity cards ranging from easy to difficult. This set is made out of plantation timber using non-toxic materials. Ages 3+ years The box measures: 26 cm (L) x 23 cm (W) x 5 cm (H) Weight: 1.2 kg