The thermal polyester material gives it the versatility to be worn as baselayer under a thicker jumper and waterproof jacket for skiing, or it can be worn on it's own if you are braving the cold for an outdoor winter workout.Thermal insulation - keeps you warm and snug when winter creeps inClose fit Crew neck - breathable for workoutsStretch design - flexibility for workoutsLong sleeves - excellent coverageFabric: 65% Polyester / 35% ViscoseColour: Black