Brand New Third Generation Spec ECWCS (Extended Cold Weather Clothing System) Thermal Underwear, in Olive Green.
These are quite simply a must for anyone going out in cold conditions. The inner grid structured fleece is designed to trap warm air close to the body whilst the channelling allows moisture to escape and evaporate so helping keep you warm and dry. Each set consists of the bottoms and top as shown in the picture so you can easily just wear the one depending on the situation. These are made with 95% polyester and 5% Elastanea which not only allows for a snug comfortable fit but allows the greatest range and ease of movement.