The North Face Size Chart Perfect for cool rainy days on the trail! Active fit has a streamlined cut that still allows freedom of movement. PrimaLoft® ThermoBall™ synthetic insulation delivers the warmth and compressibility of 600-fill down. The clusters of round synthetic insulation trap and retain heat within small air pockets to provide effective insulation, even when wet. Stand collar for added warmth and comfort. Full zip closure with snap close flap. Raglan sleeves. Soft stretch sleeves and side panels.