Xcelcius Thermal Underwear Long Sleeve Top XPV01. ext to skin thermal garment. Blended soft viscose & polyester for lightness & comfort. Modern style, cut & fit to wear under smart clothing. Garments can be washed at 40&194;&176;C without losing their shape, style or colour. Moisture is transported away from the skin through the fabric by the capillary action of the fibre. Ideal for performance base layering systems for everyday use. Fabric 50% Polyester 50% Viscose 210 gsm Poly Vee garments are suitable for temperatures down to -5&194;&176; Celsius.