Made from the miracle material Tactel, this thermal top is as light as a feather… As thin as silk… Yet as warm as fleece! With AMAZING s-t-r-e-t-c-h it’ll hug your body, just like a second skin, that locks in heat and guards against the cold. Unlike regular tops it’s designed to regulate your body temperature too, so you’ll remain toasty warm without overheating that causes you to sweat. So stay comfortably warm, without the restricting bulk this winter. Please state size when ordering.