Every cool weather hunt should start with a good base layer. This should be your first layer of protection for scent control, moisture management, and comfort, and not combined with any other fabrics that will hinder this process. This 4-Way stretch fleece with an Anti-Microbial scent protection system kills the bacteria that causes human odor. The anti-microbial treatment applied to these garments allows numerous washings without eradicating the effectiveness. 300 gram, 96% Micro-Fleece with 4% Spandex, the 4-Way stretch guarantees an extremely comfortable fit without sacrificing freedom of motion.