These lorpen womens t3 mid weight hiking socks are made using 3 separate layers of fibers which work together to increase levels of moisture management comfort and warmth a layer of primaloft eco is made up from fine fibers which trap body heat and keep out cold air this layer provides instant warmth without adding bulk and provides permanent water resistance to resist moisture penetration across the tight surface a layer of merino wool provides additional warmth and comfort whilst the fina