I use the Ultra Sport shirt for the daily commute to work by bicycle. Also it is ideal. It is long enough so that even with the typical bent-wheel bearing, the lower back is covered. Thanks to thumb holes on the sleeves here is guaranteed a fixed and especially wind safer conclusion. Since no wind creeps through the sleeves in the shirt. The high collar is significantly enhanced and remains permanently. He is also narrow enough to prevent the penetration of wind. Thanks zipper cover scrubs also not in the larynx. Sometimes conveys the product description at one point that this Short warming. Here it should be noted that it is not roughened and the rather thin fabric. No earlier than 15 degrees I'd wear it as a stand-alone top layer. In strong sunlight and little wind perhaps a few degrees less. Otherwise, it is present to me in the morning (max 10 degrees) with a jacket and afternoon (15-20 degrees) as a top layer alone in the wind.