Remarkably, Kinetic Sand moves by itself as you work with it. It continually rearranges itself. Squeeze it, shape it, build something small. Build something big. Visibly it quick-melts, and the movement is fascinating! Kinetic Sand is 98% pure sand and 2% of non-toxic polymer. It moves like dense fluid without making a mess. It sticks to itself, so cleanup is a breeze.Kinetic Sand soothes and engages both kids and adults, in schools, at work, in therapy sessions, and at home. Not all things are permanent, except maybe fascination with Kinetic Sand.Package includes 1 kg of Natural colored Kinetic Sand.