The baby einstein ocean explorers opus's stack & stream sensory stacking cups help baby engage in multi-sensory play with 4 large nesting cups and a clamshell water squirter to help baby stack, pour and discover colors, textures, and more.

Features:
- opus the octopus cup changes color in warm water.
- other cups feature vibrant colors to support color learning and visual stimulation, as well as textures for multi-sensorial exploration.
- helps build cause and effect, fine motor skills, and sensory learning as baby stacks, pours, sits, and nests cups.
- great for water play, as slotted cups allow baby to stream water.