Our Active Thermals have an ergonomic cut and are constructed with non chaffing flatlock seams. They deliver a close fit and free movement in a warm and comfortable baselayer. Non- polarized polypropylene is melt-spun and woven to form our hydrophobic, warm and lightweight fabric: Polypro Active. Polypro Active wicks sweat from the skin, greatly increasing the evaporation rate and maintains the user at their peak performance level. Polypro Active has an extremely low thermal conductivity of 0.25W/(mK) which minimises the exchange of thermal energy. These characteristics combine to keep athletes warm and dry throughout a range of climatic and aerobic conditions.