This is a Breakthrough Clean Technologies Cloth, model BT-MFT-2PK.
Breakthrough Clean is ushering in a new era of technology where cleaning your firearms is now faster and safer than ever. Their cleaning products eliminate more contaminants than most leading gun cleaners" providing optimal firearm performance" safety" and usability.
Features:
Polyester and Polyamide Microfiber Blend
Cleaning/Polishing Cloth
Removes Grease, Oil, and Dust