Columbia Quad. Has a reflective heat layer in the waterproof, breathable shell and the synthetic down liner. Can also use a fleece liner with it too. It's been my "go to" for over 30 years. I broke down and bought the new technology 2 years ago and couldn't be happier. I duck and goose hunt a lot - late season here is cold and icy - I can honestly say I've never been cold or wet with that new system. Elk hunted last year in a near blizzard and -5* temps - I was good to go. Wear it in many different combinations depending on the weather. Plus, it's guaranteed for LIFE. I sent mine back after 20 years and they replaced it no questions asked. Good stuff.
