• Plastic
• Plastic stacking ring--both interactive fun and educational, not only it could offer entertainment, but also encourage imagination and thinking abilities,stacker
• Montessori stacking--fine workmanship, it is a present for your in parties, festival, birthday, etc,rotating
• Stacker --made of plastic material, it is safe and durable for to use, stacking rings
• Stacking building --adopted of , it is durable and practical, smooth, colorful, and skin friendly,stacking plugging
• Sorting stacking --educational and creative allow to develop their creativity and imagination while playing with this fun ,stacking