Extpro Super Space Magnetic Attractor Putty Mini Putty Funny Stress Toys for Office School Desk(Blue) Safety Material: Made of silicon grease which is safety and Non-toxic. Perfect stress toys for office adults play Creative Toys: The putty is infused with millions of super-tiny, magnetic particles. Place any magnet close to the putty, it will instant shows gravitation and shape-shift Educational Toy: Great for teaching kids the magnetic field and how various materials can attract or repel each other Stress Toy: Funny toys for growing to grown ones, who needs a good time pass on their leisure time, travel time or other NOTE: Putty always takes a little time playing with to warm and soften. May feel tough to start. Box Size: 2.4"D x 0.8"H