The AXIAL Base Short Sleeve Shirt takes base layers to a new level with advancements in heat control and perspiration management to create a comfortable, athletic fit that helps you stay cool. The main body and arm panels use 4 way breathable, moisture wicking, quick-drying stretch polyester and spandex with ultra high air flow mesh inserts in key areas prone to heat and sweating. Low-profile flatlock stitching and seams enhance comfort, increase mobility and manage an athletic fit to keep you on top of the ball, no matter what you ride.