Mad Mattr - Super-Soft Modeling Dough Compound, that Never Dries Out Stretch Your Creativity To The Max Mad Mattr is an addictive, super-soft modeling compound that shapes easily. Press it, mold it, knead it, stretch it, squeeze it, sculpt it, shape it, build it - or just pull it slow and watch it flow! Clean up is a breeze, since it sticks to itself and not to you. What Will You Build? Mad Mattr easily molds and shapes into endless creations, inspiring open-ended play.