The North Face ThermoBall Hoodie uses a unique insulator designed to mimic down. Instead of using continuous yarn filaments, little clusters of insulation trap air around and between each other to retain heat. This is similar to how down works, but without turning into a cold soggy mess when it gets wet. The result is a mid-weight jacket with the burliest shell fabric of any jacket we tested, a stylish quilted pattern, and a convenient stowaway pocket with a clip-in loop.
The North Face changes the colors for this jacket almost every season. The grey we tested isn't currently available, but the jacket itself appears to remain the same.