Santini Primaloft Long Sleeve Base Layer, Black

PrimaLoft is a patented synthetic microfiber insulation material developed for the U.S. Army in the 1980s. It's a groundbreaking material that combines groundbreaking functionality (thermal insulation and cold protection technology) with practicality for use in any environment. Made with fibers thinner than a human hair, the fabric is supple and smooth. This high-performance material supports comfort during rest, activity, and any occasion.