This is an excellent quality, large knitted wipe. It is unique because it has carbon fibers knitted into the fabric so the wipe can dissipate static even when used dry. The fabric is heavier than the standard W99 wipe, so it picks up more contamination faster, speeding cleaning. It is pre-washed, so it cleans better and lints less. The edges are heat-sealed which also makes the wipe a better cleaning choice. Lastly, the wipes are packaged in a clean room, in ESD-safe bags, and is double-bagged for Class 10 clean rooms. Micro-Knit Clean Room Wipes are the top-of-the-line wipes.