Quantum Pack - 10oz Blue Wonder (Jewel Tone)

I've gotten Mad Mattr and Kinetic Sand for my grandkids. Mad Mattr stays together better, has a buttery soft feel, yet also acts like Kinetic Sand without so much mess. Kinetic Sand is more crumbly since its more like sand. Harder to get out not the carpet too. If Mad Mattr gets in the carpet, just use a little ball of it to pick it up as it sticks to itself. It vacuums up easily if any is left in the carpet. Just don't get it wet or use with wet/damp hands as it kind of melts it. My adult kids who've felt it get sucked into playing with it too. It's very relaxing to kneed it in your hands. I've had the original package for well over a year. Still very usable, but getting a little dirty since she was using it as a toddler. I bought another color now since it makes a nice Christmas present.