First mop head made from recycled PET plastic bottles. Contributes to reduced landfill waste, energy consumption and impact on greenhouse gases. Backing material is 100% recycled PET. High quality EarthSpun yarns manufactured from 30% post-consumer recycled PET. Non-heat set looped end style meets the most demanding dust mopping needs. (Also available in heat set cut end style). Standard slot pocket construction. 12 dust mops per case.