A revolutionary product, Block-IR is made from NASA developed Infra-Red blocking technology. The two outer layers of Block-IR material reduce thermal imaging heat signatures by 97%. Each layer of Block-IR material is bonded to a durable layer of polyurethane for strength. An inner layer of insulation prevents conductive heat flow. An additional layer of polyurethane gives Block-IR high reliability and strength. Completely line any space with Block-IR for a 97% reduction in thermal imaging reduction. Donít be fooled by thin, cheap imitations that donít provide complete protection. This is the real deal, accept nothing less.