Okay, if you're dealing with seriously cold weather, this Helikon-Tex Level 7 Jacket is built for extreme conditions. Conforming to the US Extended Cold Weather Clothing System (ECWCS), this is the final outer insulation layer designed to keep you warm in seriously cold situations. The Climashield Apex insulation (100g in body, 67g in hood) is the real deal - it actually keeps you warm even if it gets wet, and it's hydrophobic so it dries quickly. The nylon shell protects against wind and water while still allowing breathability. There are so many smart features - the collar houses a capacious hood that's adjustable via drawstrings accessible from chest pockets, and there's even a zippered hood pocket with two-way zipper (important for accessing without removing heavy gloves). The hood has soft fleece lining for comfort and protection from abrasions. Two fleece-lined breast pockets keep your hands warm, and large side pocket zippers allow access even with heavy mittens. There are Velcro ID panels, internal zippered dry pockets for valuables, even mesh pockets inside for drying wet clothes. The bottom is adjustable with elastic drawstring, and sleeve cuffs have elastic Velcro adjustment. It compresses easily without losing insulation properties, and comes in several colors for different environments. If you need serious cold weather protection that's been properly engineered for extreme conditions, this Level 7 Jacket absolutely delivers!