polyurethane foam;Our handcrafted stress relievers 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 handcrafted nature, stress releiver 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: 4″ w x 4″ h x 1.75″ d;