Gusseted Tuf-R® Linear Low Density Polyethylene (LLDPE) 0.85 mil bags provide extra strength and puncture resistance compared to Low Density bags of the same gauge. Because of this, it's often possible to use a lighter gauge Tuf-R® bag to do the job of a heavier gauge LDPE bag, which saves money and helps to reduce the environmental impact. Tuf-R® bags are made from virgin materials, so they comply with FDA requirements for use in food applications. Gusseted bags feature creased sides that expand to accommodate bulky items.