We took our fan-favorite heavyweight Feedback Flannel and added a combo of super-soft sherpa fleece and VerticalX ECO insulation, creating the ultimate overshirt for when temperatures drop in the fall and winter. Meet the Feedback Shirt Jacket - the best of a flannel shirt and a shirt jacket, combined into one durable, warm layer. Just as breathable and UPF protected as its flannel cousin, the Feedback's new addition of a fleece liner and 85% recycled Outdoor Research proprietary VerticalX ECO add warmth and comfort to a best seller.