Invite everyone to play with this set of varying size blocks. 100 building blocks in a wooden tray (44.5 cm). Blocks: 4 cm thick and range in size from 4 x 4 x4 cm to 20 x 4 x 4 cm. Clean with soapy water and a damp cloth; dry immediately. Do not submerge in water, use disinfectant or hot water. Made in Germany. Ages 3+.