Whether it’s for work or for recreation, Workforce thermals will keep you warm and comfortable. This stretch knit thermal long sleeved vest is our warmest and heaviest base layer, intended for very cold environments. Ribbing helps makes the shirt snug while the softly brushed inner surface keeps warm air next to the skin. The high performance polyester and viscose fibre controls your body temperature as you move. This shirt is made from a 2.8g heavyweight performance material.(09/11)