White Sweatshirt Wiping Rags are a perfect bulk rag, works for a variety of applications and environmentally friendly. Our cotton Wiping rags are actually made from recycled white sweatshirts. Known for absorbency and durability wet or dry, this wiper is mostly cotton and free from buttons, zippers, and snaps, but there will be occasional clothing tags. The knit side can be used like polo, and the softer side can be used where a softer wiper is required.