Our Magic Water can develop children's attention, hands, color perception, and hand-eye coordination, exercise children's imagination, and creativity, and provide an exciting activity for children to improve their hands-on ability, explore and create force. Features: 1. Ease of use. 2. Sparkle in the light. 3. Reliable material. Specification: Material: calcium lactate, color glue, ABS, etc. Appropriate age: 7 years old and above are recommended Color gel capacity: about 50ml per bottle Packing List: 1* Magic Water Kit