Non-heat set looped-end style meets the most demanding dust mopping needs. Standard slot pocket construction. First mop head made from recycled PET plastic bottles. Contributes to reduced landfill waste, energy consumption and impact on greenhouse gases. Backing materials 100% recycled PET. High-quality EarthSpun® fibers are manufactured from 30% post-consumer recycled PET plastic bottles. Product contains 97% total recovered content. Green. Includes 12 dust mop heads.