Mad Mattr- The Ultimate Brick Maker Blue STRETCH YOUR CREATIVITY TO THE MAX: Mad Mattr® is an addictive, super-soft modelling compound that shapes easily. Press it, mold it, knead it, stretch it, squeeze it, squish it, sculpt it, shape it, build it – or just pull it slow and watch it flow! And clean up is a breeze, since it sticks to itself and not to you. NON-DRYING FOR HOURS OF FUN-FILLED PLAY: Mad Mattr® never dries out no matter how long it is left out; so, it can be used over and over again, providing endless, fun-filled hours of stretchy, open-ended play. Not only is Mad Mattr perfect for relaxing and calming, but it’s also great for strengthening fingers, hands, wrists and more. UNIQUE, NOT-TOXIC FORMULA: Mad Mattr’s® unique, non-toxic formula is gluten, casein and wheat-free.