The Alpine Fit™ is close to the body and reduces bulk to gives enough room for unrestricted movement, while a streamlined design enhances light weight, comfort and energy efficiency. The inserts at underarm enhances breathability and flat stitching suits perfectly all active mountain sports. The Polartec® Power Dry® Silkweight Solid has a smooth advantage and offers excellent moisture-wicking performance along with thermal regulation. It is combined with a Honeycomb pique fabric that enhances breathability and, to help preserve the performance, a Polygiene® treatment stops odor causing bacteria and reduces the need to wash. The LTK Activ Zip t-shirt is ideal for fast and light adventurous runs, in daylight or low light and dark conditions.