The Triple-S SSS36665 Endless Twist Colored Quick Change Dust Mop uses a proprietary Endless Twist yarn that resists fraying and unraveling even after repeated laundering. Twisted loops prevent the mop from catching on obstacles and extend the product's service life. Pre-laundered before shipment; fully launderable for ongoing commercial use. Blue, 24-inch width with quick-change attachment. Sold individually.