Our men's thermals include sleek thermal pants, ribbed thermal vests, solid color thermals, and full thermal suits. First Lite is a leading tactical clothing manufacturer from the US that has revolutionized the industry with its groundbreaking technologies. First Lite’s tactical clothing is manufactured using Merino wool, Aerowool, and the 37.5 technology that will help you control body temperature and more. Black color symbolize power and invisibility.