Sewn around base and looped on ends for the best speadability and absorbency. Synthetic rayon 4- ply yarn, mildew resistant. Medium Rayon Banded/Looped Mop Head $11.05, 6/$57.00, 12/$106.20 Large Rayon Banded/Looped Mop Head $12.67, 6/$69.60, 12/$126.61