Hefty Ultra Strong Multipurpose Trash Bags feature the highest puncture protection available in a flexible trash bag. Hefty's Triple Action Technology gives these maximum-strength, 30 gallon garbage bags superior resistance to tears, leaks and punctures, so you can load them up with sharp objects and oversized materials. Hefty Ultra Strong heavy duty trash bags stretch and expand to accommodate the load. The strong and dependable drawstring closure resists breakage and ensures your trash stays in these black garbage bags while you haul them to the curb or dumpster. All Hefty trash bags are backed by a 100% satisfaction guarantee.