Description The item is a magical jellyfish fairy toy, which makes use of the principle of hydraulic power, to make the jellyfish in a smooth water bottle sink down quickly, float up and rotate by 360-degree freely. It is powered hydraulic power, no need external battery. With eco-friendly design and easy to use, therefore, it is really a wonderful jellyfish toy for your children. Features - Color: Random color. - Material: Plastic. - Size: Approx. 2.5 x 1.8 x 1cm. - Magical Jellyfish. Put the jellyfish in a plastic bottle, tighten the cap, and just by squeezing it, it will swim up and down according to the principles of hydraulic power. - Make it spin, float and sink! - A fun, educational, and hands-on toy for adults and children. - Suitable for Ages 7 and above.Packing list: 12 x Magical Jelleyfish Toy Swimming Floats Accessories Fun Science Educational Toy for Kids Children (Random Color)