Thermoreg long sleeve kids baselayer top navy a close skin fit non compression construction using a mix of man made fibres to maintain warmth and eliminate water from the skin and process this to the outside of the garment where it can evaporate more effectively to keep you dry and light whilst staying warm warmth retaining thermoreg lining also designed to hold more of your body heat and keep you warm when in play without becoming over heated or heavy flat lock sewn seams wi