Key Features :
i : Not only is Mad Mattr perfect for creating calm, relaxing and imaginative fun, it's also great for strengthening fingers, hands, wrists, and moreii : Never dries out no matter how long it's left outiii : Can be used over and over again providing endless fun-filled hours of stretchy open ended playiv : Non-toxic formula is wheat, gluten, and casein freev : Cleanup's a breeze, since it sticks to itself and not to you