The maker of the massively popular Stanley cups is facing multiple lawsuits over the use of lead in its products

• Customers are suing the company that owns Stanley over its viral cups.
• In two class action lawsuits, plaintiffs said Stanley did not disclose that its cups contain lead. 
• The company said that "no lead is present on the surface of any Stanley product."

Customers concerned by recent reports that Stanley cups contain lead are taking legal action against the parent company behind the viral product.