I hike in this vest with temperatures in the high 30s to mid 50s. On the cooler end of that spectrum I pair it with a mid-weight fleece and on the higher end, just a long sleeve tee shirt. This vest keeps me warm and dry all day. The thick material offers extra padding while wearing a backpack. This is a tough vest, every stitch and zipper is wonderfully durable. I would give it 5 stars if there were some soft material around the collar, especially where it contacts your chin.