Features: Ferrofluid Display Toy Bottle: Ferrofluid is an amazing liquid that becomes highly magnetized when exposed to a magnetic field. Place magnets near the fluid to observe its mesmerizing gravitational movements and shape-shifting properties. Stress-relief:The dynamic and captivating nature of ferrofluid, combined with the tactile experience of manipulating magnets, can help reduce stress and improve focus. This makes it an ideal gift for those with ADHD or focus challenges, offering a relaxing sensory experience. STEM Learning:Watch as the ferrofluid "dances" inside the bottle. Use your imagination to create different movements, drops, spikes, and formations by manipulating the magnets. The 2-ounce suspension solution inside each glass bottle offers endless possibilities for interactive, educational fun. Magnetic Liquid Desk Toy:Change the speed, force, and combination of magnets to create various shapes like drops, spikes, and even little "feet" inside the bottle. This interactive display is sure to captivate anyone who loves science and can be a great addition to your desk or coffee table. Perfect Gift:This ferrofluid toy is an excellent present for teens or anyone interested in science experiments. It makes a fun and educational gift for birthday parties, classrooms, or as a reward for achievements. Notice:Actual color may vary slightly due to lighting effects.Please allow a 1-3cm deviation due to manual measurement. Description:vProduct size: 3x3x10cm Cautions: Do not open the bottle; it is fragile and should be handled with care.When not in use, avoid leaving magnets attached to the magnetic fluid display bottle for long periods.It is normal for some magnetic fluid to stick to the bottom of the bottle. Shake the bottle before use to distribute the fluid evenly. Do not ingest the liquid inside the bottle, and avoid putting magnets into your mouth or nose. In case of ingestion, seek medical attention immediately. The high-tech phenomena that once required high temperatures and electromagnetic suspension can now be experienced in this compact bottle. When you're feeling upset, let this little gadget "come alive" and show its mesmerizing magic! Include:1 Set Ferrofluid Desk Fidgets Toy