Warn people of the dangers of Dihydrogen Monoxide. Sign material is plastic, NOT PAPER Sign measures approx. 7" x 5". Stickers measure 3-1/2" x 2-1/2" This DHMO kit consists of one (1) plastic Danger sign and four (4) DHMO stickers. This is a professionally printed plastic 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. The 4 stickers are printed on chemical-resistant plastic stock and measure 3-1/2" x 2-1/2". DIHYDROGEN MONOXIDE IS COLORLESS AND ODORLESS. ACCIDENTAL INHALATION OF DHMO MAY BE FATAL