I basically use it for everything. Predator hunting in the winter when the wind is blowing and I'm walking a lot. I wear it upland bird hunting. Other than a rain jacket, it's all I take spring bear hunting.What exactly do you use the Jetstream for? Wind blocking layer? Or just a warm softshell?
I wear a Jetstream for waterfowl hunting late in the season. It is a great jacket for picking up decoys etc. when it is cold and windy.