Is a unique polypropylene yarn engineered with a distinctive remission curve in the infrared (IR) spectrum. This advanced technology decreases the thermal/IR signature, providing protection against detection by optoelectronic devices. When adorned, PROLEN®Invisible allows the wearer to seamlessly blend with their surroundings, impeding identification by specific instruments. It finds its application among soldiers, law enforcement personnel, snipers, hunters, and nature photographers, all of whom can benefit from its unique properties.