Twisted pile material is a mixture 70% N/P Microfiber and 30% Polypropylene. *1N/P Microfiber is made of 70% Polyester and 30% Polyamide fibre. With stiff polypropylene included. For hard floor use, any contamination and dirt will be brushed with polypropylene during motion they are polished with microfiber at the same time. Which makes an easy and handy cleaning system. Due to special twisted process, this pile keeps shape to be stable in a long run, it causes less lint comparing to other types of cut pile. 40cm length. For use with the Bio Cleaning Mop & Velcro mop frame.