This thick puffer vest from Polar Skate Co. is a great outer layer to keep your core warm and toasty. The nylon and polyester construction resists water and the goose down filling keeps your body heat in.
Down - Down is the lightest and warmest option when it comes to outerwear insulation, the only drawbacks with down is it doesn't perform well in wet conditions and it's more expensive. Synthetics will dry faster than down and are easier to clean, but can't beat down when it comes to performing in very cold and dry weather.
Water Resistant Fabric - A DWR (Durable Water Repellent) finish allows fabric to shed moisture and prevents saturation to keep you warmer. DWR also helps repel oils and stains which can affect the fabric's breathability. Clothing with a DWR finish is a must in snowy or wet conditions.