A reliable 10k/10k shell, or insulator jacket, or both zipped seamlessly together to make for one winter jacket that you can always rely on, the Grand 3 in 1 jacket has all your bases covered. Whether you need a fully insulated jacket for when you're out on the slopes, just a shell with 10k/10k laminate for warmer, wetter days, or want a light insulator for running errands around town, the Grand 3 in 1 jacket brings a whole lot of versatility to the table.