What's the difference between tall and small Hedwig?

Hello, what's the difference between Hedwig Gaole granules and small granules? Compared with large particles, the volume ratio of small particles is 1/8.

Large granules are suitable for younger babies (about 3 years old). Because the building blocks are large, the baby's small hands are easy to grasp, and the large particles are brightly colored, which is convenient for the baby to know the color.

Small and fine particles, suitable for older children (over 5 years old). Because the particles are small, you can exercise your child's hand-eye coordination, observation and patience. of course