This Hygiemic Socket Mop is a circular mop head with a T1 screw thread socket. It is held in its circular shape by a stayflat band which enables the mop to cover a larger floor area. The looped end yarn prevents linting and prevents the yarn from tangling. This mop head is made from a 50/50 blend of polyester and cotton yarns which strengthens the product and increases absorbency. Washable up to 60 degrees celcius.