When I initially received the insulated jacket, I was slightly disappointed that it wasn’t a heavier/thicker jacket. For it being called “insulated,” I thought it would be a bit padded or have some warm lining on the inside (there aren’t any product photos that show what the inside of the jacket looks like). In reality, it’s very thin, very lightweight, and there’s no lining inside as shown in my video. However, I’ve found this to be the perfect jacket for the current California fall weather. It’s great as a heavier windbreaker, it keeps you warm enough in cool/slightly windy weather, isn’t too hot if it’s warm outside, can be worn by itself or with a t-shirt or sweatshirt underneath, and it’s stylish and very comfortable. I’ve worn this almost every day since I bought it a month ago. I was very tempted to buy another one in the Olive color but decided to add their 3L rain jacket to my collection next instead. I really love this insulated jacket and wanted to add this review to encourage others to get it as well! Not sure why it’s not getting any love and 5-star reviews like their other products - it’s an awesome jacket! And in case it helps anyone determine sizing, I’m 5’7” 125 lbs and the XS is a perfect fit all around.