When a low-pressure system moves through the streets of New York in the winter months, grab a hot coffee and your Sonic Down Jacket to combat the bone-chilling cold. HD Fabric offers full stretch and moves with you when weaving though the busy sidewalks, and 800-fill premium goose down keeps your jacket lightweight and packable while still being incredibly warm. When a light drizzle of rain or snow decides to accompany you on your commute, a DWR coating and strategic laminated seams keep you dry and prevent leakage into your jacket.