Blocks Geometrical, 60 pcs.Grimm's 60 classic multi coloured geometrical blocks come in a 3 different thicknesses 1 cm, 2 cm and 4 cm thickness. From easy to challenging, these building block sets are a constant companion throughout childhood! Packaged in natural coloured net bag. Made using European sourced FSC certified wood. Grimm's colours are non toxic, water based stains that are absolutely harmless and tested in depth for colour fastness in contact with saliva. This test