Polyurethane foam;Our hand-crafted polyurethane foam stress balls are a fun way to promote your company, organization, hospital or school, while also helping everyone who receives one squeeze away the stress of everyday life!; NOTE: Due to their hand-crafted nature, stress ball sizes, colors and textures may vary. Factory cannot guarantee consistent imprints or PMS matches. ; Not intended as a child's or pet's toy; Product Size: 3" w x 3" h x 1.25" d;