Made with high quality linear low density resins, these liners deliver the performance you've come to expect from the Big City brand, plus important "Green" advantages that make them a smart choice for environmental sustainability. Contains a special oxo-biodegradable additive that stimulates photodegradation (UV) and oxidation to reduce the moleclar weight of the plastic film. When exposed to UV light, heat and oxygen, this two-step process breaks down the plastic into small fragments, which are then able to degrade. Green tint.