Bubber is the lightest modeling compound on Earth. Bubber is non-toxic, non allergenic and gluten free. It leaves no stain or residue and never dries out, so you can play with it over and over. It cleans up easily off floors and carpet with a vacuum. This smooth soft compound is easy to work with and leaves clean, sharp edges when cut and precise impressions when imprinted. This soft compound is an excellent source for tactile stimulation, improving fine motor skills, small motor skills, gross motor skills, eye-hand coordination and creativity.