Hilltops develop children's ability to estimate distances and make them familiar with heights. The rubber feet prevent them from slipping and protect the floor. Hilltops are made so that they cannot overturn. Includes suggestions for games. Each set includes 5 Hilltops in three heights: two measuring 38cm (15") x 9cm (3-1/4") H; two measuring 41cm (16-1/4") x 17cm (6-3/4") H; one measuring 43cm (17") x 26cm (10-1/4)" H.