Pro-Shot 100% Cotton Flannel Patches have become known worldwide for their superior cleaning ability.Our reputation for superior quality products began when we madeour first bag of patches over 27 years ago. Now after manufacturing millions of patches, our quality and superior cleaning patches have become sought after by the most accurate-minded shooters in the world. The fact is well-known that nothing surpasses 100% COTTON FLANNEL FABRIC for purposes of absorbing foreign matter and residue, and in turn carry it through the BORE with the LEAST amount of abrasive contact to the barrels rifling. Regular cleaning helps to reduce leading and metal fouling which is something that builds upon itself over a period of time. This will cause subtle deterioration of group size and FLYERS. All of PRO-SHOT patch material is 100% cotton flannel finished both sides. 100% American Made Cotton Flannel - Finished Both Sides for extra absorbency!