Whether they're staying inside or heading out to explore, keep little adventurers snug and cosy in cold weather with our range of HEATTECH thermal tops and girls' leggings. Choose from everyday comfort with HEATTECH Jersey or high-performance temperature regulation for really cold days with HEATTECH Extra Warm. Looking for something for long days in the cold or winter holidays? Our HEATTECH Ultra Warm range is 2.2x thicker and warmer than regular HEATTECH Jersey for warmth you can rely on whatever the weather.