The Dottore Hybrid Que Long-Sleeve Jersey maps three fabrics across the body: a wind-blocking material at the chest and outer arms, a softer insulating fleece at the inner arms and stomach, and a breathable pinstripe panel at the back. That combination lets one jersey stand in for both a long-sleeve layer and a winter jacket, covering a wide span of cold-weather conditions without a swap mid-season. What Our Gearhead(R) Experts Are Saying:"I've stopped packing a separate jacket for the mornings that start cold and warm up fast, since this jersey handles both ends of that swing on its own. The back panel is doing real work by the second hour, venting heat before I ever think to unzip."