Boardwalk Floor Finish Mop Head is made from a high-grade, four-ply, rayon-blend which is designed to help you lay finish more evenly. Looped ends minimize unraveling and linting. Constructed to be more durable with a double-sewn tailband and polyester-tape headband. The mop heads are mildew and bacteria resistant. Designed for use with clamp and grip-style mop handles, which are sold separately. - High-grade, four-ply rayon-blend. - Looped ends to reduce unraveling. - Durable, double-sewn tailband and polyester-tape headband.