Dura Pro Blend Mop Outlasts And Outperforms Cotton. Premium, Cut-End, Four-Ply Blend Of Cotton, Rayon And Synthetic Yarn Delivers Excellent Absorbency As Well As Good Performance And Durability. 1" Headband Fits Side-Loading Handles (Sold Separately). To Clean, Only Bucket-Wash And Wring The 24 Oz. Mophead. Laundering Is Not Recommended For The Cut-End Fibers.