This amazing baselayer is designed to keep you cool and comfortable in warm conditions or while working out indoors. Bodymapped and cool wing technology locates Superlight Mesh where you tend to produce the most heat and sweat - a wing area under the arm and on the upper back. The superlight mesh panels are also positioned for completely unrestricted motion so you can focus on your activity.A lot of riders will only use Craft baselayers. We think this is because Craft has always designed their base layers to perform for athletes with maximum comfort and wicking while racing or completing arduous workouts. Crafts unique hexachannel fibers aggressively pull moisture from next to the body to the outside of the baselayer. The formfitting light compression makes you forget the baselayer is even there.