Thermal clothing is a type of clothing that keeps you warm in cold weather. Travellers Empire is a one of the Best Thermal Wear Retailer in Chennai Shop @ Okkiyampet OMR. It is made from a fabric that is moisture-wicking and breathable, which means it helps to keep you dry and comfortable. Thermal clothing is often referred to as “base layer” clothing because it is the innermost layer of clothing that you wear.