DescriptionThese cyclones tubes are made of plastic with stripes on the surface of connectors which makes it much easier for you to rotate, the proper size that is suitable for most bottles, practical and convenient to use. These bottle connectors are suitable to connect a bottle with little water or an empty bottle. You can shake the bottle horizontally 4 or 5 times, and then you will see the water rotate in the bottle.Features- Material: Plastic. - Made of premium plastic material, it is safe for kids to play. - Bright color to catch children's attention and help children to cultivate children's cognition of color in order to build their color awareness. - The tornado connector for scientific experiments, can stimulate children's interest in learning and curiosity, improve children's learning ability.- Develop a child's scientific curiosity and desire to explore, and to build primary scientific concepts in their minds. - A great gift for your children to build child-parent interaction between your children and you.
