All WYPALL*X Wipers are made from our patented HYDROKNIT* material which is comprised of soft, absorbent cellulose fibres and strong polypropylene none-woven fabric. The cellulose component allows these wiping cloths to absorb water quickly and effectively, while the tear-resistant polypropylene fabric soaks up more than its own weight in oil and grease. The result is durable and absorbent wipers, which can be used wet or dry.