3 years & up. Take care of all your classroom adhesive needs with these safe Medium Non Toxic Easy Apply Glue Sticks for Arts and Crafts. These non toxic, acid free white glue sticks come in a variety of sizes and styles. The glue sticks bond to many porous and semi-porous materials such as paper, cardboard & photos. Store in a cool, dry place to make the glue long lasting. Medium glue sticks are .28 oz. each, large glue sticks are .70 oz. each, & jumbo glue sticks are 1.41 oz each. Set of 30.