Stretch your creativity to the max….with Mad Mattr – the amazing, super-soft modelling compound that molds and builds incredibly easily. Mad Mattr is stretchy, flowy and incredibly tactile - press it, mold it, knead it, stretch it, squeeze it, squish it, sculpt it, shape it, build it! Stretch it slow and watch it flow. Mad Mattr is the super soft modelling compound, that molds and shapes easily; and when used with The Ultimate Brick Maker allows you to build connecting, stackable bricks! Because it doesn't dry out and maintains its shape when compacted, Mad Mattr is perfect for building amazing creations and inspiring open-ended play! What will you build?