Warn people of the dangers of Dihydrogen Monoxide. Sign material is plastic, NOT PAPER Stickers measures approx. 7" x 5". Adhesive is permanent This DHMO kit consists of one (2) vinyl Danger sign stickers. This is a professionally printed vinyl sign made to resemble the standard OSHA Danger signage. Measures approx. 7" x 5". It is printed on GHS plastic sign stock and has marine-grade adhesive. DIHYDROGEN MONOXIDE IS COLORLESS AND ODORLESS. ACCIDENTAL INHALATION OF DHMO MAY BE FATAL