The state of California requires businesses to provide warnings about exposure to chemicals like Tris(2-chloroethyl) phosphate. This is a chemical that is used in all tents (and other common equipment) with flame retardant coating. Prop 65  lists chemicals that are dangerous in their pure form. When these chemicals are used as components of common products, they are in a relatively small amount and is commonly found in other common products such as aspirin, gasoline, alcoholic beverages, food and so on. We use the label to keep our customers informed and to comply with the California law, however our customers safety is our priority and we are confident that our products do not demonstrate a health & safety concern when used properly as stated in the manuals and instructions.