The North Face says:
Designed to eliminate cold spots and ultimately keep you warmer in the backcountry without adding weight, this ultralight jacket features two-layer ThermoBall insulation. Round Thermoball powered by PrimaLoft clusters trap and retain heat to achieve phenomenal warmth in cold and wet conditions. Finished with ample additional insulation (100 g) through the water-resistant nylon ripstop neck, shoulders and outer sleeves.
Historic Range: $113.99-$230.00
Historic Range: $126.47-$230.00