This novelty toy is the to initiate kids into basic science , by offering them a fun, interactive experiential learning experience. You can make , pieces, spikes, and a little foot, by changing the moving speed, force, combination of the magnets. You can even dance. Use your imagination and imaginative . Spend time practicing focus and help kids develop fine motor skills and expand their understanding of the natural world. healthier than some relieving to combat anxiety and fight off stress from long work days. More than just a toy, it helps kids with sensory processing development, through with magnets! Magical Toy - Utterly addictive. It will melt your brain with its awesomeness. Novelty - Ferrofluid in a bottle, is the astonishing liquid, which can lead you to a carefree world. Many shapes - You may also enjoy the fun and fascinating moments of playing. Stress Relief - It's an advanced toy, to help stress relief for adults in the fast-tempo society. Science Kit - It's a good gift for teens to do some science experiments, fun but not boring as normal experiments. Perfect Gift - The best relaxing educational toy for all ages. Your best adorable gift choice. Item Name: Ferrofluid Magnetic Display Material: glass Color: Black SIZE: 3*3*10cm Note: 1: Do not open the bottle, gently place it for it's fragile goods; 2: When not in use, do not attach the magnet to the magnetic fluid display bottle for a long time. 3: It's normal if there is little magnetic fluid sticking to bottom, please shake the display bottle before use. 4: The bottle of liquid is not eatable, the magnet can not be placed in the mouth or nose, if you swallow it accidentally, please for help immediately. 5:Do not open the black cap as it is sealed tightly for safety or you will get stained by the ferrofluid liquid. 6:Please do not leave the magnets on the bottle for over 2 mins even if you don't want to . It will stain the bottle by the ferrofluid. 7:The ferrofluid can't stand low ( 0 celsius) and high temperature (above 48 celsius) or it will be broken easily. Package Contents: 1* magnetic fluid display bottle 2* magnetic handles with magnetic 2* powerful magnets 1* manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.