Blackspade Thermal Pro Seamless Unisex Underwear 9571 Blackspade pro underwear wraps your body perfectly with its seamless stylish design. Its special fabric has the ability to transfer moisture very quickly. It helps to maintain your body temperature by supporting the rapid transfer of sweat in your physical activities. It is suitable for use as underwear or as outerwear alone, depending on the weather conditions, during all 4 seasons.