How to use: Let your little one start by feeling the textured silicone bubbles on each cup. They can push and pop the bubbles for fun. Then, show them how to stack the cups from the biggest to the smallest or nest them from the smallest to the biggest. This will help develop their fine motor skills and spatial awareness. Attention: Make sure the child is supervised while playing to avoid any accidental choking on the small parts. Maintenance: You can easily clean the cups with mild soap and water. Keep them in a dry place when not in use.