Our sleeveless Base layer is designed to be worn under the racing jersey to assist with moisture management from the body core. The main fabric is AirMesh, a perforated, polyester performance fabric; which is designed to help regulate body heat in all conditions and all seasons. For the summer months is helps to remove sweat from the body and in the winter it acts as an extra layer of chest insulation. All the seams have flatlock stitching so they won’t chafe. The base layers are close fitting and cut longer at the back and raised at the front for a better fit on the bike. Odour resistant, excellent perspiration wicking and thermoregulation.