The CORE+ base layer is designed for the coldest conditions. It utilises Thermal GRIDtech technology designed to retain maximum heat and rapidly disperse moisture to the outer surface. The body-mapped design has been athletically shaped, so the high wicking fabric can sit tight to the body in order to absorb and disperse as much sweat as possible, all the while allowing maximum movement in the high stretch areas. The warm nature and fast sweat distribution properties mean that the CORE+ is a perfect base layer under warm outers in cold climates as well as a standalone layer in the mild parts of the day. The CORE+ should be used in temperatures ranging from 20°F to 50°F for maximum performance. For warmer conditions, the CORE range is recommended.