Sleeveless top with seamless construction.Coolskin is an ultra-lightweight polypropylene fibre that is specifically designed to keep you comfortably cool and dry in warmer temperatures.The open structure of the fabric promotes airflow to the skin and, through the "push-pull" effect, wicks sweat away from the skin and into the higher layers of clothing.Flatlock seams for extra comfort.Material composition: 63% polypropylene, 37% polyamide. Size chart