Poly-Wipes are constructed from monofilament polyester no-run knit, providing excellent strength, good absorbency and chemical compatibility. These wipers are a perfect choice for general cleanroom and equipment maintenance, or any critical applications were lint can be detrimental. Processed and packaged in a Class 10 cleanroom. - ITW Chemtronics Coventry Heavy-Weight Cleaning Wipes with Heat Sealed Edge.