I have been using this vest for three years now and I have to say that it is my go-to piece of clothing. I pack it along on trips from the start of archery season, all the way to the last day. This is a great piece for morning glassing when worn on top of your core long sleeve. It does a great job of regulating your core temperature during cold mornings and while worn under a jacket. I always layer with a core long sleeve shirt, traverse hoody, jetstream vest and jetstream jacket. This system will take you into late archery hunts like we have in Utah. I test clothing for GoreTex and Sitka Gear and can't wait to check out the jetstream lite vest. Overall, I give this garment a 5/5 for construction/design, weight, and warmth.
Salt Lake City, UT