For most LEGO sets, they’re labelled with a small age range such as “8–12” or “4–7”. These sets have an age limit for gift-buyers.
What is the difference between Lego and Lego Duplo?
Basic Differences Each DUPLO brick is eight times the size of its comparable LEGO brick, or twice as high, wide and long. The bricks from LEGO and DUPLO snap together, but the size difference is noticeable — it takes four 2×2 LEGO squares to fill the top of one DUPLO 2×2 square.