This Large 60 piece starter set from HABA is suitable for beginner to expert architects ages 1 - 8 years. Contents include: 8 square blocks, 14 rectangular blocks, 16 slats, 8 triangles, 4 bridges, 6 Columns, 4 special building blocks and sturdy fabric carrying tote. Shapes are in standard unit measurements 1.75" x 1.75" and compatible with all building systems from HABA. Made of solid, natural, untreated beech wood that comes from sustainable forestry in Germany. For ages 1 and up.