Stay warm, stay ready. An excellent base-layer made for cold weather tactical conditions, the Sub-Z Crew is engineered from a comfortable polyester/spandex blend and features a textured interior for enhanced warmth retention. When it's cold, the last thing you need is a subpar garment hindering your focus. The Sub-Z Crew offers flatlock seams, extended length, and moisture-wicking construction, so all you have to think about is which route to take, what gear to deploy, and what beer to celebrate with. This is how to beat winter. Anti-microbial technology that inhibits the growth of odor-causing bacteria. Material: Polyester, Spandex.