SmartSign "Biohazard, Lab Coats, Glasses, Gloves Required" with Graphic, Plastic Sign, 14" x 10" 55 mil thick, made of polyethylene, a tear-resistant plastic Lightweight, semi-flexible and easy to install Rounded corners and predrilled mounting holes Resistant to chemicals and water. Recommended for indoors, 1-3 year life outside Made of 50% recycled plastic