Thermopile fabricconstructed from super soft microfibres this material has a comfortable feel as well as high performance properties the thermopile fabric gives you excellent breathability as well as lightweight warmth the fleece traps warm air as well as drawing sweat away from the skin to leave you feeling dry and comfortable polygiene174 this garment is treated with polygiene174 permanent odour control helping to keep you fresh and odour free polygiene naturally inhibits the growth