While the Capo Siena jacket is more than adequate for a wide variety of weather conditions, Capo also realizes that the weather conditions aren't always your only challenge. Sometimes, on top of weather, it's traffic, and more specifically, the dangerous type that might not see you as you travel the roads in the pre dawn or post evening darkness. For those times, we strongly recommend the Capo Women's Siena HiViz Midweight Jacket, ensuring protection from the elements and superb visibility at the same time. The Siena HiViz Jacket is part of Capo's Corsa series. This series shows the level of Capo's dedication to all things Italian and cycling, which is why Italian fabrics are used in all of the pieces in the series. The Thermal Jacket is constructed with Micro Quattro Fleece and a Brick windproof membrane. The Quattro fleece has a soft, brushed inner layer that insulates against the cold by holding the warmth your body produces in its fibers. This brushed layer also makes the jacket comfortable to wear next to your skin when you want pair it with a short sleeve jersey. The wind blocking Brick membrane throughout the Siena jacket is what makes it a go to for winter riding. Though heat retention properties in a jacket are necessary for warmth, the Brick membrane keeps crisp air from penetrating the jacket, and sucking away your body heat as you descend hills and wind your way through country roads. While the top end fabrics Capo uses are nothing short of fantastic, the use is nullified if the fit is off. That's why the Siena jacket's fit is nothing short of impeccable. Using a multi panel, contoured design, the jacket follows the shape of your body, while following its movements in and out of the saddle, much like the fit of the Siena jersey. A full length zipper down the center of the jacket is backed with a zip flap to add an additional barrier against the wind. The camlock zip pull allows for easy ventilation when you find yourself warming up on a climb. The ...