Reusable bags are manufactured with 15 to 20 times the amount of plastic used in the now prohibited single-use plastic bag, notes the Freedonia report. The reusable bags that New Jersey residents now pay for at checkout or when their groceries are delivered, according to researchers, need to be used anywhere from 11-59 times in order to have a net benefit for the environment. The Freedonia study found most reusable bags are used an average of two to three times. As a result, overall plastic usage for bags in New Jersey has risen.